Association of Age, Gender, Deprivation, Urbanicity, Ethnicity, and Smoking with a Positive Test for COVID-19 in an English Primary Care Surveillance Network: Cross Sectional Study of the First 500 Cases
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2021 ◽
Vol 18
(7)
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pp. 3359
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2014 ◽
Vol 20
(4)
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pp. 260-267
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