1. Department of Obstetrics and Gynaecology The Chinese University of Hong Kong Hong Kong SAR China
2. Department of Medicine and Therapeutics The Chinese University of Hong Kong Hong Kong SAR China
3. Li Ka Shing Institute of Health Sciences The Chinese University of Hong Kong Hong Kong SAR China
4. Hong Kong Institute of Diabetes and Obesity The Chinese University of Hong Kong Hong Kong SAR China
5. Department of Obstetrics and Gynaecology Mother Infant Research Institute, Tufts Medical Center Boston Massachusetts USA