1. Department of Medical Statistics and Epidemiology, School of Public Health; Sun Yat-sen University; Guangzhou; China
2. Department of Clinical Nutrition; Guangdong General Hospital (Guangdong Academy of Medical Sciences); Guangzhou; China
3. Department of Vascular Surgery; the First Affiliated Hospital of Sun Yat-sen University; Guangzhou; China
4. Nursing Department; the First Affiliated Hospital of Sun Yat-sen University; Guangzhou; China
5. Centre of Research and Promotion of Women's Health, School of Public Health and Primary Care; The Chinese University of Hong Kong; Hong Kong; China