1. Department of Clinical Psychology, Princess Margaret Hospital, Hong Kong
2. Department of Clinical Psychology, Caritas Medical Centre, Hong Kong
3. Department of Clinical Psychology, Yan Chai Hospital, Hong Kong
4. Department of Medical & Geriatrics/ Intense Care Unit, Caritas Medical Centre, Hong Kong
5. Department of Medicine, Yan Chai Hospital, Hong Kong
6. Hospital Authority Infectious Disease Centre, Princess Margaret Hospital, Hong Kong