1 Infectious Diseases Translational Research Programme, Department of Medicine, Yong Loo Lin School of Medicine, Singapore.
2 Infectious Diseases Translational Research Programme, Department of Medicine, Yong Loo Lin School of Medicine, Singapore; Institute for Health Innovation and Technology, National University of Singapore, Singapore; Division of Infectious Diseases, Department of Medicine, National University Hospital, Singapore 119228, Singapore. Electronic address: catherine.ong@nus.edu.sg.