1. Department of Urology University of Michigan Ann Arbor Michigan USA
2. Department of Biostatistics and Bioinformatics, Biostatistics Center, Milken Institute School of Public Health George Washington University Washington District of Columbia USA
3. Division of Metabolism, Endocrinology and Diabetes, Department of Internal Medicine University of Michigan Ann Arbor Michigan USA
4. Department of Surgery University of California Irvine Orange California USA
5. Pennington Biomedical Research Center Louisiana State University System Baton Rouge Louisiana USA
6. Department of Epidemiology and Biostatistics Indiana University School of Public Health Bloomington Indiana USA
7. Department of Urology and Diabetes, Research Center University of Washington School of Medicine Seattle Washington USA