?:authorAffiliation
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[\'Center for Clinical Epidemiology and Methodology (CCEM), Guangdong Second Provincial General Hospital, Guangzhou, China.\', \'Department of Infection Management, Guangdong Second Provincial General Hospital, Guangzhou, China.\', \'P3 Biosafety Level Laboratory, Guangdong Second Provincial General Hospital, Guangzhou, China.\', \'Center for Clinical Epidemiology and Methodology (CCEM), Guangdong Second Provincial General Hospital, Guangzhou, China; Department of Health Research Methods, Evidence and Impact (HEI), McMaster University, Hamilton, ON, Canada. Electronic address: lig28@mcmaster.ca.\']
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