1 National Centre for Infectious Diseases, Singapore; Duke-NUS Graduate Medical School, National University of Singapore, Singapore; Department of Infectious Diseases, Singapore General Hospital, Singapore. Electronic address: [email protected].
2 Ministry of Health, Singapore.
3 National Centre for Infectious Diseases, Singapore; Ministry of Health, Singapore.
4 Department of Respiratory and Critical Care Medicine, Tan Tock Seng Hospital, Singapore; Lee Kong Chian School of Medicine, Nanyang Technological University, Singapore.
5 National Centre for Infectious Diseases, Singapore; Lee Kong Chian School of Medicine, Nanyang Technological University, Singapore; Yong Loo Lin School of Medicine, National University of Singapore, Singapore; Department of Infectious Diseases, Tan Tock Seng Hospital, Singapore.
6 National Centre for Infectious Diseases, Singapore; Duke-NUS Graduate Medical School, National University of Singapore, Singapore; Ministry of Health, Singapore; Saw Swee Hock School of Public Health, National University of Singapore, Singapore.