1. Department of Urology, University of California-San Francisco, San Francisco, California
2. Service d'Urologie-Andrologie, Hopital General de Grand Yoff, Dakar, Senegal
3. University of California-San Francisco Helen Diller Family Comprehensive Cancer Center, San Francisco, California
4. Department of Radiation Oncology, University of California-San Francisco, San Francisco, California
5. Department of Epidemiology and Biostatistics, University of California-San Francisco, San Francisco, California