1. Urology Unit, Department of Surgery, Faculty of Medicine, University of Malaya, Kuala Lumpur, Malaysia.
2. Department of Surgery, SH Ho Urology Centre, The Chinese University of Hong Kong, Hong Kong, China.
3. Department of Surgery, The First Affiliated Hospital, Fujian Medical University, Fuzhou, Hong Kong, China.
4. Division of Urology, Tuen Mun Hospital, Hong Kong, China.
5. Division of Urology, Kwong Wah Hospital, Hong Kong, China.
6. Department of Urology, National Taiwan University Hospital, Taipei, Taiwan.