1. Departments of Urology (B.S., H.L., H.F., Ho.L., Y.L.), Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing 100005, China
2. Department of Surgery (L.Z.), The First Affiliated Hospital of Qiqihar Medical University, Qiqihar, Heilongjiang 161006, China
3. Dermatology (Q.S.), Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing 100005, China
4. Department of Internal Medicine (Y.F.), University of Missouri, Columbia, Missouri 65211
5. Department of Urology (Y.F.), The Third Affiliated Hospital of Peking University, Beijing 100083, China
6. Department of Veterans Affairs Research Service (Y.F.), Harry S. Truman Memorial Veterans Hospital, Columbia, Missouri 65212