1. Department of Urology, University of California, San Francisco, San Francisco, California.
2. Department of Nephro-urology, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan.
3. Division of Urology, Faculty of Medicine, Chulalongkorn University, King Chulalongkorn Memorial Hospital, The Thai Red Cross Society, Bangkok, Thailand.
4. Endocrine Research Unit, Veterans Affairs Medical Center, San Francisco and University of California, San Francisco, California.