1 Division of Infectious Diseases, Department of Medicine, National University Hospital, 5, Lower Kent Ridge Road, Singapore, 119074; Yong Loo Lin School of Medicine, National University of Singapore, 10, Medical Drive, Singapore, 117597. Electronic address: jolene_oon@nuhs.edu.sg.
2 Division of Infectious Diseases, Department of Medicine, National University Hospital, 5, Lower Kent Ridge Road, Singapore, 119074. Electronic address: brenda_mae_alferez@nuhs.edu.sg.
3 Department of Pharmacy, National University Hospital, 5, Lower Kent Ridge Road, Singapore, 119074. Electronic address: Yin_Shan_LIM@nuhs.edu.sg.
4 Division of Infectious Diseases, Department of Medicine, National University Hospital, 5, Lower Kent Ridge Road, Singapore, 119074; Yong Loo Lin School of Medicine, National University of Singapore, 10, Medical Drive, Singapore, 117597. Electronic address: mdcsa@nus.edu.sg.
5 Division of Infectious Diseases, Department of Medicine, National University Hospital, 5, Lower Kent Ridge Road, Singapore, 119074; Yong Loo Lin School of Medicine, National University of Singapore, 10, Medical Drive, Singapore, 117597. Electronic address: mdcfda@nus.edu.sg.