scholarly journals Effects of Selenium Supplementation on Graves’ Disease: A Systematic Review and Meta-Analysis

2018 ◽  
Vol 2018 ◽  
pp. 1-10 ◽  
Author(s):  
Huijuan Zheng ◽  
Junping Wei ◽  
Liansheng Wang ◽  
Qiuhong Wang ◽  
Jing Zhao ◽  
...  
Keyword(s):  
Systematic Review ◽  
Thyroid Function ◽  
Meta Analysis ◽  
Selenium Supplementation ◽  
Control Group ◽  
Graves Disease ◽  
Cochrane Central Register ◽  
Placebo Administration ◽  
Increased Risk ◽  
Tsh Levels

Low selenium status is associated with increased risk of Graves’ disease (GD). While several trials have discussed the efficacy of selenium supplementation for thyroid function, in GD patients, the effectiveness of selenium intake as adjuvant therapy remains unclear. In this systematic review and meta-analysis, we aimed to determine the efficacy of selenium supplementation on thyroid function in GD patients. Two reviewers searched PubMed, Web of Science, the Cochrane Central Register of Controlled Trials, and four Chinese databases for studies published up to October 31, 2017. RCTs comparing the effect of selenium supplementation on thyroid hyperfunction in GD patients on antithyroid medication to placebo were included. Serum free thyroxine (FT4), free triiodothyronine (FT3), thyrotrophic hormone receptor antibody (TRAb), and thyroid-stimulating hormone (TSH) levels were assessed. Ten trials involving 796 patients were included. Random-effects meta-analyses in weighted mean difference (WMD) were performed for 3, 6, and 9 months of supplementation and compared to placebo administration. Selenium supplementation significantly decreased FT4 (WMD=-0.86 [confidence interval (CI)-1.20 to -0.53]; p=0.756; I2=0.0%) and FT3 (WMD=-0.34 [CI-0.66 to -0.02]; p=0.719; I2=0.0%) levels at 3 months, compared to placebo administration; these findings were consistent at 6 but not 9 months. TSH levels were more elevated in the group of patients taking selenium than in the control group at 3 and 6, but not 9 months. TRAb levels decreased at 6 but not 9 months. At 6 months, patients on selenium supplementation were more likely than controls to show improved thyroid function; however, the effect disappeared at 9 months. Whether these effects correlate with clinically relevant measures remains to be demonstrated.

scholarly journals EXPRESS: Stroke risk following traumatic brain injury: systematic review and meta-analysis

2021 ◽  
pp. 174749302110042
Author(s):  
Grace Mary Turner ◽  
Christel McMullan ◽  
Olalekan Lee Aiyegbusi ◽  
Danai Bem ◽  
Tom Marshall ◽  
...  
Keyword(s):  
Systematic Review ◽  
Stroke Risk ◽  
Meta Analysis ◽  
Vitamin K Antagonists ◽  
Cochrane Library ◽  
Control Group ◽  
Large Sample Size ◽  
Hazard Ratios ◽  
Increased Risk ◽  
The Cochrane Library

Aims To investigate the association between TBI and stroke risk. Summary of review We undertook a systematic review of MEDLINE, EMBASE, CINAHL, and The Cochrane Library from inception to 4th December 2020. We used random-effects meta-analysis to pool hazard ratios (HR) for studies which reported stroke risk post-TBI compared to controls. Searches identified 10,501 records; 58 full texts were assessed for eligibility and 18 met the inclusion criteria. The review included a large sample size of 2,606,379 participants from four countries. Six studies included a non-TBI control group, all found TBI patients had significantly increased risk of stroke compared to controls (pooled HR 1.86; 95% CI 1.46-2.37). Findings suggest stroke risk may be highest in the first four months post-TBI, but remains significant up to five years post-TBI. TBI appears to be associated with increased stroke risk regardless of severity or subtype of TBI. There was some evidence to suggest an association between reduced stroke risk post-TBI and Vitamin K antagonists and statins, but increased stroke risk with certain classes of antidepressants. Conclusion TBI is an independent risk factor for stroke, regardless of TBI severity or type. Post-TBI review and management of risk factors for stroke may be warranted.

scholarly journals Tolerability of statin-based management of patients with a history of statin-associated muscle symptoms: protocol for a systematic review

BMJ Open ◽  
2021 ◽  
Vol 11 (8) ◽  
pp. e052341
Author(s):  
Fanny Villoz ◽  
Christina Lyko ◽  
Cinzia Del Giovane ◽  
Nicolas Rodondi ◽  
Manuel R Blum
Keyword(s):  
Systematic Review ◽  
Meta Analysis ◽  
Mean Difference ◽  
Control Group ◽  
Cochrane Central Register ◽  
Eligibility Criteria ◽  
Clinical Issue ◽  
Standard Data ◽  
Evaluation Approach ◽  
History Of

IntroductionStatin-associated muscle symptoms (SAMSs) are a major clinical issue in the primary and secondary prevention of cardiovascular events. Current guidelines advise various approaches mainly based on expert opinion. We will lead a systematic review and meta-analysis to explore the tolerability and acceptability and effectiveness of statin-based therapy management of patients with a history of SAMS. We aim to provide evidence on the tolerability and different strategies of statin-based management of patients with a history of SAMS.Methods and analysisWe will conduct a systematic review of randomised controlled trials (RCTs) and non-randomised studies with a control group. We will search in Data sources MEDLINE, EMBASE, Cochrane Central Register of Controlled Clinical Trials, Scopus, Clinicaltrials.gov and Proquest from inception until April 2021. Two independent reviewers will carry out the study selection based on eligibility criteria. We will extract data following a standard data collection form. The reviewers will use the Cochrane Collaboration’s tools and Newcastle-Ottawa Scale to appraise the study risk of bias. Our primary outcome will be tolerability and our secondary outcomes will be acceptability and effectiveness. We will conduct a qualitative analysis of all included studies. In addition, if sufficient and homogeneous data are available, we will conduct quantitative analysis. We will synthesise dichotomous data using OR with 95% CI and continuous outcomes by using mean difference or standardised mean difference (with 95% CI). We will determine heterogeneity visually with forest plots and quantitatively with I2 and Q-test. We will summarise the confidence in the quantitative estimate by using Grading of Recommendations Assessment, Development and Evaluation approach.Ethics and disseminationAs a systematic review of literature without collection of new clinical data, there will be no requirement for ethical approval. We will disseminate findings through peer-reviewed publications.PROSPERO registration numberCRD42020202619.

scholarly journals Factors Associated with Attrition and Performance Throughout Surgical Training: A Systematic Review and Meta-Analysis

2020 ◽  
Vol 45 (2) ◽  
pp. 429-442
Author(s):  
Carla Hope ◽  
John-Joe Reilly ◽  
Gareth Griffiths ◽  
Jon Lund ◽  
David Humes
Keyword(s):  
Systematic Review ◽  
Surgical Training ◽  
Clinical Performance ◽  
Meta Analysis ◽  
Female Gender ◽  
Attrition Rate ◽  
Cochrane Central Register ◽  
Surgical Residency ◽  
Institutional Data ◽  
Increased Risk

Abstract Background Attrition within surgical training is a challenge. In the USA, attrition rates are as high as 20–26%. The factors predicting attrition are not well known. The aim of this systematic review is to identify factors that influence attrition or performance during surgical training. Method The review was performed in line with PRISMA guidelines and registered with the Open Science Framework (OSF). Medline, EMBASE, PubMed and the Cochrane Central Register of Controlled Trials were searched for articles. Risk of bias was assessed using the Newcastle–Ottawa scale. Pooled estimates were calculated using random effects meta-analyses in STATA version 15 (Stata Corp Ltd). A sensitivity analysis was performed including only multi-institutional studies. Results The searches identified 3486 articles, of which 31 were included, comprising 17,407 residents. Fifteen studies were based on multi-institutional data and 16 on single-institutional data. Twenty-nine of the studies are based on US residents. The pooled estimate for overall attrition was 17% (95% CI 14–20%). Women had a significantly higher pooled attrition than men (24% vs 16%, p < 0.001). Some studies reported Hispanic residents had a higher attrition rate than non-Hispanic residents. There was no increased risk of attrition with age, marital or parental status. Factors reported to affect performance were non-white ethnicity and faculty assessment of clinical performance. Childrearing was not associated with performance. Conclusion Female gender is associated with higher attrition in general surgical residency. Longitudinal studies of contemporary surgical cohorts are needed to investigate the complex multi-factorial reasons for failing to complete surgical residency.

scholarly journals Digital telemedicine interventions for patients with multimorbidity: a systematic review and meta-analysis

BMJ Open ◽  
2020 ◽  
Vol 10 (10) ◽  
pp. e036904
Author(s):  
Christian Kraef ◽  
Marc van der Meirschen ◽  
Caroline Free
Keyword(s):  
Systematic Review ◽  
Health Status ◽  
Usual Care ◽  
Total Cholesterol ◽  
Meta Analysis ◽  
Perceived Health ◽  
Absolute Difference ◽  
Control Group ◽  
Cochrane Central Register ◽  
Perceived Health Status

ObjectiveTo determine the effectiveness of digital telemedicine interventions designed to improve outcomes in patients with multimorbidity.DesignSystematic review and meta-analysis of available literature.Data sourcesMEDLINE, EMBASE, The Cochrane Central Register of Controlled Trials, ClinicalTrials.gov, and the Database of Abstracts of Reviews of Effectiveness and hand searching. The search included articles from inception to 19 April 2019 without language restrictions. The search was updated on 7 June 2020 without additional findings.Eligibility criteriaProspective interventional studies reporting multimorbid participants employing interventions with at least one digital telemedicine component were included. Primary outcomes were patient physical or mental health outcomes, health-related quality of life scores and the utilisation of health services.ResultsOut of 5865 studies initially identified, 7 articles, reporting on 6 studies were retained (total of 699 participants). Four of these studies reported interventions including integration with usual care, two studies had interventions with no links to usual patient care. Follow-up periods lasted between 2 and 6 months. Among the studies with links to usual care, the primary outcomes were systolic blood pressure (SBP) (three studies), haemoglobin A1c (HbA1c) (three studies), total cholesterol (two studies) and self-perceived health status (one study). The evidence ranged from very low to moderate certainty. Meta-analysis showed a moderate decrease in SBP (8 mm Hg (95% CI 4.6 to 11.4)), a small to moderate decrease in HbA1c (0.46 mg/dL (95% CI 0.25 to 0.67)) and moderate decrease in total cholesterol (cholesterol 16.5 mg/dL (95% CI 8.1 to 25.0)) in the intervention groups. There was an absence of evidence for self-perceived health status. Among the studies with no links to usual care, time to hospitalisation (median time to hospitalisation 113.4 days intervention and 104.7 days control group, absolute difference 12.7 days) and the Minnesota Living with Heart Failure Questionnaire (intervention group 35.2 score points, control group 23.9 points, absolute difference 11.3, 95% CI 5.5 to 17.1) showed small reductions. The Personal Health Questionnaire (PHQ-8) showed no evidence of improvement (intervention 7.6 points, control 8.6 points, difference 1.0 points, 95% CI −22.9% to 11.9%).ConclusionDigital telemedicine interventions provided moderate evidence of improvements in measures of disease control but little evidence and no demonstrated benefits on health status. Further research is needed with clear descriptions of conditions, interventions and outcomes based on patients’ and healthcare providers’ preferences.PROSPERO registration numberCRD42019134872.

Outcomes of Medication Misadventure Among People With Cognitive Impairment or Dementia: A Systematic Review and Meta-analysis

2020 ◽  
pp. 106002802094912
Author(s):  
Anum Saqib Zaidi ◽  
Gregory M. Peterson ◽  
Luke R.E. Bereznicki ◽  
Colin M. Curtain ◽  
Mohammed Salahudeen
Keyword(s):  
Systematic Review ◽  
Cognitive Impairment ◽  
Adverse Drug Events ◽  
Data Extraction ◽  
Meta Analysis ◽  
Published Data ◽  
Potentially Inappropriate Medications ◽  
Cochrane Central Register ◽  
Increased Risk ◽  
Meta Analyses

Objective: To investigate mortality and hospitalization outcomes associated with medication misadventure (including medication errors [MEs], such as the use of potentially inappropriate medications [PIMs], and adverse drug events [ADEs]) among people with cognitive impairment or dementia. Data Sources: Ovid MEDLINE, Ovid EMBASE, Ovid International Pharmaceutical Abstracts, Cumulative Index to Nursing and Allied Health Literature, and Cochrane Central Register of Controlled Trials were searched from inception to December 2019. Study Selection and Data Extraction: Relevant studies using any study design were included. Reviewers independently performed critical appraisal and extracted relevant data. Data Synthesis: The systematic review included 10 studies that reported the outcomes of mortality or hospitalization associated with medication misadventure, including PIMs (n=5), ADEs (n=2), a combination of MEs and ADEs (n=2), and drug interactions (n=1). Five studies examining the association between PIMs and mortality/hospitalization were included in the meta-analyses. Exposure to PIMs was not associated with either mortality (odds ratio [OR]=1.36; 95%CI=0.79-2.35) or hospitalization (OR=1.02; 95%CI=0.83-1.26). In contrast, single studies indicated that ADEs with cholinesterase inhibitors were associated with mortality and hospitalization. Relevance to Patient Care and Clinical Practice: Individuals with cognitive impairment or dementia are at increased risk of medication misadventure; based on relatively limited published data, this does not necessarily translate to increased mortality and hospitalization. Conclusions: Overall, medication misadventure was not associated with mortality or hospitalization in people with cognitive impairment or dementia, noting the limited number of studies, difficulty in controlling potential confounding variables, and that most studies focus on PIMs.

scholarly journals Oral hormone pregnancy tests and the risks of congenital malformations: a systematic review and meta-analysis

F1000Research ◽  
2019 ◽  
Vol 7 ◽  
pp. 1725 ◽  
Author(s):  
Carl Heneghan ◽  
Jeffrey K. Aronson ◽  
Elizabeth Spencer ◽  
Bennett Holman ◽  
Kamal R. Mahtani ◽  
...  
Keyword(s):  
Systematic Review ◽  
Cohort Studies ◽  
Congenital Malformations ◽  
Meta Analysis ◽  
Case Control ◽  
Control Group ◽  
Case Control Studies ◽  
Renal Anomalies ◽  
Congenital Heart Malformations ◽  
Increased Risk

Background: Oral hormone pregnancy tests (HPTs), such as Primodos, containing ethinylestradiol and high doses of norethisterone, were given to over a million women from 1958 to 1978, when Primodos was withdrawn from the market because of concerns about possible teratogenicity. We aimed to study the association between maternal exposure to oral HPTs and congenital malformations. Methods: We have performed a systematic review and meta-analysis of case-control and cohort studies that included data from pregnant women and were exposed to oral HPTs within the estimated first three months of pregnancy, if compared with a relevant control group. We used random-effects meta-analysis and assessed the quality of each study using the Newcastle–Ottawa Scale for non-randomized studies. Results: We found 16 case control studies and 10 prospective cohort studies, together including 71 330 women, of whom 4,209 were exposed to HPTs. Exposure to oral HPTs was associated with a 40% increased risk of all congenital malformations: pooled odds ratio (OR) = 1.40 (95% CI 1.18 to 1.66; P<0.0001; I2 = 0%). Exposure to HPTs was associated with an increased risk of congenital heart malformations: pooled OR = 1.89 (95% CI 1.32 to 2.72; P = 0.0006; I2=0%); nervous system malformations  OR = 2.98 (95% CI 1.32 to 6.76; P = 0.0109 I2 = 78%); gastrointestinal malformations, OR = 4.50 (95% CI 0.63 to 32.20; P = 0.13; I2 = 54%); musculoskeletal malformations, OR = 2.24 (95% CI 1.23 to 4.08; P= 0.009; I2 = 0%); the VACTERL syndrome (Vertebral defects, Anal atresia, Cardiovascular anomalies, Tracheoesophageal fistula, Esophageal atresia, Renal anomalies, and Limb defects), OR = 7.47 (95% CI 2.92 to 19.07; P < 0.0001; I2 = 0%). Conclusions: This systematic review and meta-analysis shows that use of oral HPTs in pregnancy is associated with increased risks of congenital malformations.

scholarly journals Methods for Anterior Torque Control during Retraction: A Systematic Review

2021 ◽  
Author(s):  
Marek Nahajowski ◽  
Grzegorz Olchowski ◽  
Maciej Warnecki ◽  
Joanna Lis ◽  
Elie Amm ◽  
...  
Keyword(s):  
Systematic Review ◽  
Meta Analysis ◽  
Research Question ◽  
Torque Control ◽  
Maxillary Incisor ◽  
Control Group ◽  
Cochrane Central Register ◽  
High Quality Research ◽  
Main Research ◽  
Anterior Teeth

Abstract BackgroundThere are various methods to control the inclination of the incisors during retraction, but there is no evidence as to the advantages of some methods over others. The purpose of this systematic review and meta-analysis was to determine the effectiveness of the methods used to control torque during anterior teeth retraction.MethodsIn accordance with the PRISMA guidelines, the main research question was defined in the PICO format [P: patients with complete permanent dentition; I: the maxillary incisor torque after (I) and before (C) retraction with straight-wire appliance and different modes of torque control; O: statistically significant differences in torque values of the upper incisors after orthodontic treatment]. The MEDLINE, EMBASE, and Cochrane Central Register of Controlled Trials databases were searched for keywords combining: retraction orthodontics, torque control orthodontics, torque orthodontics, inclination orthodontics, torque control retraction. The articles were subjected to risk of bias and quality analyses with the ROBINS-I protocol and the modified Newcastle–Ottawa QAS, respectively. Meta-analyses were performed with both fixed and random effects models.Results13 articles were selected in which total number of 580 subjects took part. In all studies incisors were retroclined during retraction by 2.46° (mean difference), which was statistically significant. Considering articles separately, differences in torque between the study group and the control group were statistically significant in 6 articles. The Q statistic value was 36.25 with p = .0003 and I2 = 66.9% which indicate a high level of study heterogeneity.ConclusionBoth properly performed corticotomy and en-masse retraction using orthodontic microimplants seem to be the most effective and scientifically validated methods of torque control. Further high-quality research is needed to perform better quality analyses and draw more reliable conclusions.

PROGNOSIS OF DIFFERENTIATED THYROID CARCINOMA IN PATIENTS WITH GRAVES DISEASE: A SYSTEMATIC REVIEW AND META-ANALYSIS

2019 ◽  
Vol 25 (12) ◽  
pp. 1323-1337 ◽  
Author(s):  
Poemlarp Mekraksakit ◽  
Pattara Rattanawong ◽  
Rudruidee Karnchanasorn ◽  
Chanavuth Kanitsoraphan ◽  
Natnicha Leelaviwat ◽  
...  
Keyword(s):  
Systematic Review ◽  
Confidence Interval ◽  
Thyroid Carcinoma ◽  
Cancer Diagnosis ◽  
Distant Metastasis ◽  
Odds Ratio ◽  
Meta Analysis ◽  
Differentiated Thyroid Carcinoma ◽  
Graves Disease ◽  
Increased Risk

Objective: It is still controversial whether differentiated thyroid carcinoma (DTC) in patients with Graves disease (GD) can be more aggressive than non-Graves DTC. We conducted a systematic review and meta-analysis to examine the association between GD and prognosis in patients with DTC. Methods: We comprehensively searched the databases of MEDLINE and EMBASE from inception to March 2019. We included published studies that compared the risk of mortality and prognosis between DTC patients with GD and those with non-GD. Data from each study were combined using the random-effects model. Results: Twenty-five studies from February 1988 to May 2018 were included (987 DTC patients with GD and 2,064 non-Graves DTC patients). The DTC patients with GD had a significantly higher risk of associated multifocality/multicentricity (odds ratio, 1.45; 95% confidence interval, 1.04 to 2.02; I 2, 6.5%; P = .381) and distant metastasis at the time of cancer diagnosis (odds ratio, 2.19; 95% confidence interval, 1.08 to 4.47; I 2, 0.0%; P = .497), but this was not associated with DTC-related mortality and recurrence/persistence during follow-up. Conclusion: Our meta-analysis demonstrates a statistically significant increased risk of multifocality/multicentricity and distant metastasis at the time of cancer diagnosis in DTC patients with GD than those without GD. Abbreviations: CI = confidence interval; DTC = differentiated thyroid carcinoma; GD = Graves disease; LN = lymph node; OR = odds ratio; PTC = papillary thyroid carcinoma; TC = thyroid carcinoma; TSAb = thyroid-stimulating antibody; TSH = thyroid-stimulating hormone

scholarly journals Non-thyroidal illness syndrome predicts outcome in adult critically ill patients: a systematic review and meta-analysis

2022 ◽  
Author(s):  
Josi Vidart ◽  
Paula Jaskulski ◽  
Ana Laura Kunzler ◽  
Rafael Aguiar Marschner ◽  
André Ferreira de Azeredo da Silva ◽  
...  
Keyword(s):  
Systematic Review ◽  
Critically Ill ◽  
Thyroid Function ◽  
Critically Ill Patients ◽  
Animal Studies ◽  
Case Reports ◽  
Meta Analysis ◽  
Univariate Analysis ◽  
Prognostic Information ◽  
Increased Risk

We performed a systematic review and meta-analysis to comprehensively determine the prevalence and the prognostic role of nonthyroidal illness syndrome (NTIS) in critically ill patients. We included studies that assessed thyroid function by measuring the serum thyroid hormone level and in-hospital mortality in adult septic patients. Reviews, case reports, editorials, letters, animal studies, duplicate studies, and studies with irrelevant populations and inappropriate controls were excluded. A total of 6869 patients in 25 studies were included. The median prevalence rate of NTIS was 58% (IQR 33.2-63.7). In univariate analysis, triiodothyronine (T3) and free T3 (FT3) levels in non-survivors were relatively lower than that of survivors (8 studies for T3; standardized mean difference (SMD) 1.16; 95% confidence interval (CI), 0.41–1.92; I2 = 97%; P < 0.01). Free thyroxine (FT4) levels in non-survivors were also lower than that of survivors (12 studies; SMD 0.54; 95% CI, 0.31–0.78; I2 = 83%; P < 0.01). There were no statistically significant differences in TSH levels between non-survivors and survivors. NTIS was independently associated with increased risk of mortality in critically ill patients (OR = 2.21, 95% CI 1.64.- 2.97, I2 = 65% p < 0.01) The results favor the concept that decreased thyroid function might be associated with a worse outcome in critically ill patients. Hence, the measurement of TH could provide prognostic information on mortality in adult patients admitted to ICU.

scholarly journals Benzodiazepine Use and Risk of Dementia in the Elderly Population: A Systematic Review and Meta-Analysis

2016 ◽  
Vol 47 (3-4) ◽  
pp. 181-191 ◽  
Author(s):  
Md. Mohaimenul Islam ◽  
Usman Iqbal ◽  
Bruno Walther ◽  
Suleman Atique ◽  
Navneet Kumar Dubey ◽  
...  
Keyword(s):  
Systematic Review ◽  
Random Effects ◽  
Observational Studies ◽  
Meta Analysis ◽  
Sensitivity Analyses ◽  
Control Group ◽  
Clinical Heterogeneity ◽  
Dementia Risk ◽  
Increased Risk ◽  
Benzodiazepine Use

Background: Benzodiazepines are a widely used medication in developed countries, particularly among elderly patients. However, benzodiazepines are known to affect memory and cognition and might thus enhance the risk of dementia. The objective of this review is to synthesize evidence from observational studies that evaluated the association between benzodiazepines use and dementia risk. Summary: We performed a systematic review and meta-analysis of controlled observational studies to evaluate the risk of benzodiazepines use on dementia outcome. All control observational studies that compared dementia outcome in patients with benzodiazepine use with a control group were included. We calculated pooled ORs using a random-effects model. Ten studies (of 3,696 studies identified) were included in the systematic review, of which 8 studies were included in random-effects meta-analysis and sensitivity analyses. Odds of dementia were 78% higher in those who used benzodiazepines compared with those who did not use benzodiazepines (OR 1.78; 95% CI 1.33-2.38). In subgroup analysis, the higher association was still found in the studies from Asia (OR 2.40; 95% CI 1.66-3.47) whereas a moderate association was observed in the studies from North America and Europe (OR 1.49; 95% CI 1.34-1.65 and OR 1.43; 95% CI 1.16-1.75). Also, diabetics, hypertension, cardiac disease, and statin drugs were associated with increased risk of dementia but negative association was observed in the case of body mass index. There was significant statistical and clinical heterogeneity among studies for the main analysis and most of the sensitivity analyses. There was significant statistical and clinical heterogeneity among the studies for the main analysis and most of the sensitivity analyses. Key Messages: Our results suggest that benzodiazepine use is significantly associated with dementia risk. However, observational studies cannot clarify whether the observed epidemiologic association is a causal effect or the result of some unmeasured confounding variable. Therefore, more research is needed.

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