Prevalence and Patterns of Comorbidity Among Middle-Aged and Elderly People in China: A Cross-Sectional Study Based on CHARLS Data
2021 ◽
Vol Volume 14
◽
pp. 1449-1455
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2019 ◽
Vol 42
(2)
◽
pp. 190-196
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2018 ◽
Vol 41
(1)
◽
pp. 15-21