1. Institute of Biochemistry, University Medicine Berlin–Charité, Berlin, F.R. Germany.
2. Department of Obstetrics and Gynaecology, -development and Repair, School of Biomedical Sciences, The Chinese University of Hong Kong, Shatin, Hong Kong.
3. Department of Neuro-degeneration, -development and Repair, School of Biomedical Sciences, The Chinese University of Hong Kong, Shatin, Hong Kong.