Affiliation: | a Department of Health Sciences Research, Mayo Clinic College of Medicine, Rochester, Minnesota b Department of Urology, Mayo Clinic College of Medicine, Jacksonville, Florida c Departments of Epidemiology and Urology, University of Michigan, Ann Arbor, Michigan d Merck & Co, North Wales, Pennsylvania e Department of Urology, Mayo Clinic College of Medicine, Rochester, Minnesota f Department of Research and Evaluation, Southern California Permanente Medical Group, Pasadena, California |