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  • [\'School of Public Health, Zhejiang University, Hangzhou, China.\', \'Mianyang Maternal and Child Health Care Hospital, Mianyang, China.\', \'JC School of Public Health and Primary Care, The Chinese University of Hong Kong, Hong Kong, China jxwang@link.cuhk.edu.hk clairehh4588@gmail.com.\', \'JC School of Public Health and Primary Care, The Chinese University of Hong Kong, Hong Kong, China.\', \'Department of Applied Mathematics, Hong Kong Polytechnic University, Hong Kong, China.\']
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  • -1
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  • 10.1136/bmjopen-2021-049752
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  • BMJ open
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  • 34876424
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  • 1.372
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?:title
  • Ratio of asymptomatic COVID-19 cases among ascertained SARS-CoV-2 infections in different regions and population groups in 2020: a systematic review and meta-analysis including 130 123 infections from 241 studies.
?:type
?:year
  • 2021

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