1. Department of Urology, University of Michigan , Ann Arbor, MI 48109-2800 , United States
2. Department of Urology, Virginia Mason Medical Center , Seattle, WA 98101 , United States
3. Department of Urology and Diabetes Endocrinology Research Center, University of Washington , Seattle, WA 98195 , United States
4. Biostatistics Center, George Washington University , Rockville, MD 20852 , United States
5. Division of Metabolism , Endocrinology and Diabetes, Department of Internal Medicine, , Ann Arbor, MI 48105 , United States
6. University of Michigan , Endocrinology and Diabetes, Department of Internal Medicine, , Ann Arbor, MI 48105 , United States
7. Long Island School of Medicine, New York University, Mineola , NY 11501 , United States