1 Jockey Club School of Public Health and Primary Care, Chinese University of Hong Kong, Hong Kong, China. Electronic address: shanquan0301@gmail.com.
2 Jockey Club School of Public Health and Primary Care, Chinese University of Hong Kong, Hong Kong, China.
3 Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, China.