1. Department of Medicine and Therapeutics The Chinese University of Hong Kong Tianjin China
2. Department of Obstetrics and Gynaecology The Chinese University of Hong Kong Tianjin China
3. Department of Epidemiology and Biostatistics School of Public Health Tianjin Medical University Tianjin China
4. The Li Ka Shing Institute of Health Sciences The Chinese University of Hong Kong Hong Kong
5. Hong Kong Institute of Diabetes and Obesity The Chinese University of Hong Kong Hong Kong