1. Department of Urology, West China Hospital, Sichuan University, Chengdu 610041, China
2. Vancouver Prostate Centre, Vancouver, BC V6H 3Z6, Canada
3. Department of Urologic Sciences, University of British Columbia, Vancouver, BC V5Z 1M9, Canada
4. Department of Experimental Therapeutics, BC Cancer, Vancouver, BC V5Z 1L3, Canada