1 Department of Anaesthesia and Intensive Care, The Chinese University of Hong Kong, Hong Kong SAR, China.
2 Critical Care Medicine Unit, School of Clinical Medicine, The University of Hong Kong, Hong Kong SAR, China.
3 Department of Adult Intensive Care, Queen Mary Hospital, Hong Kong SAR, China.
4 Department of Intensive Care, Princess Margaret Hospital, Hong Kong SAR, China.
5 Department of Intensive Care, North District Hospital, Hong Kong SAR, China.
6 Department of Intensive Care, Tuen Mun Hospital, Hong Kong SAR, China.
7 Department of Intensive Care, Pamela Youde Nethersole Eastern Hospital, Hong Kong SAR, China.
8 Department of Intensive Care, Queen Elizabeth Hospital, Hong Kong SAR, China.
9 Department of Intensive Care, United Christian Hospital, Hong Kong SAR, China.
10 Department of Medicine & Geriatrics, Ruttonjee and Tang Shiu Kin Hospitals, Hong Kong SAR, China.
11 Department of Intensive Care, Kwong Wah Hospital, Hong Kong SAR, China.
12 Department of Medicine, Tseung Kwan O Hospital, Hong Kong SAR, China.
13 Department of Medicine and Geriatrics, Caritas Medical Centre, Hong Kong SAR, China.
14 State Key Laboratory of Digestive Diseases, Li Ka Shing Institute of Health Sciences, The Chinese University of Hong Kong, Hong Kong SAR, China.
15 Institute of Digestive Disease, The Chinese University of Hong Kong, Hong Kong SAR, China.
16 CUHK Shenzhen Research Institute, Shenzhen, China.
17 Peter Hung Pain Research Institute, The Chinese University of Hong Kong, Hong Kong SAR, China.
18 WHO Collaborating Centre for Infectious Disease Epidemiology and Control, School of Public Health, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong SAR, China.
19 Laboratory of Data Discovery for Health Limited, Hong Kong Science and Technology Park, New Territories, Hong Kong SAR, China.
20 Department of Population Medicine, Harvard Medical School/Harvard Pilgrim Health Care Institute, Boston, MA, United States.
21 Division of Infectious Diseases, Department of Medicine, Brigham and Women's Hospital, Boston, MA, United States.