1. Department of Pathology, Princess Margaret Hospital, Hong Kong Special Administrative Region, People’s Republic of China
2. State Key Laboratory of Emerging Infectious Diseases, School of Public Health, The University of Hong Kong, Hong Kong Special Administrative Region, People’s Republic of China
3. Department of Health Technology and Informatics, The Hong Kong Polytechnic University, Hong Kong Administrative Region, People's Republic of China
4. Department of Medicine and Geriatrics/Intensive Care Unit, Caritas Medical Centre, Hong Kong Special Administrative Region, People’s Republic of China