1. Department of Obstetrics and Gynaecology, The Chinese University of Hong Kong, New Territories, Hong Kong.
2. Department of Chemical Pathology, The Chinese University of Hong Kong, New Territories, Hong Kong.
3. Department of Medicine and Therapeutics, The Chinese University of Hong Kong, New Territories, Hong Kong.
4. Hong Kong Institute of Diabetes and Obesity, The Chinese University of Hong Kong, New Territories, Hong Kong.
5. Li Ka Shing Institute of Health Sciences, The Chinese University of Hong Kong, New Territories, Hong Kong.