1. Prince of Wales Clinical School, Faculty of Medicine, University of New South Wales, Sydney, Australia
2. Faculty of Medicine, Department of Clinical Oncology, Prince of Wales Hospital, The Chinese University of Hong Kong, Hong Kong
3. Assisted Reproductive Technology Unit, Department of Obstetrics and Gynaecology, Prince of Wales Hospital, The Chinese University of Hong Kong, Hong Kong
4. Department of Clinical Oncology, State Key Laboratory of Translational Oncology, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong