1 Department of Urology, Boston University School of Medicine, Mass.
2 Department of Urology, University Hospitals Birmingham NHS Foundation Trust and, University of Aston, Birmingham, United Kingdom.
3 Men's Health Center, Department of Family and Community Medicine, Department of Family Medicine and Urology, Warren Alpert School of Medicine of Brown University, Providence, RI.
4 Men's Health Boston and, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Mass.