Affiliation: | (1) Department of Community and Family Medicine and School of Public Health, Chinese University of Hong Kong, Hong Kong SAR, China.;(2) School of Public Health, Prince of Wales Hospital, 4/F Shatin, HKSAR, PR China;(3) General Practice and Primary Care, Division of Community-Based Sciences, Faculty of Medicine, University of Glasgow, 1 Horselethill Road, G12 9LX Glasgow, UK |