1. Kinesiology Department; California Polytechnic State University; San Luis Obispo California USA
2. Department of General Internal Medicine; University of California, San Francisco; San Francisco California USA
3. Biostatistics Center; The George Washington University; Rockville Maryland USA
4. Department of Epidemiology and Biostatistics; University of California, San Francisco; San Francisco California USA
5. Division of Epidemiology; University of California, San Diego; San Diego California USA
6. Department of Psychiatry and Human Behavior; Warren Alpert Medical School of Brown University; Providence Rhode Island USA
7. The Miriam Hospital; Providence Rhode Island USA
8. Division of Kidney, Urologic and Hematologic Disease; National Institute of Diabetes and Digestive and Kidney Diseases; Bethesda Maryland USA
9. University of Pittsburgh; Pittsburgh Pennsylvania USA
10. Albert Einstein College of Medicine; Bronx New York USA
11. The University of Texas Health Science Center at San Antonio; San Antonio Texas USA
12. Departments of Obstetrics, Gynecology and Reproductive Sciences, Urology and Epidemiology; UCSF Women's Health Clinical Research Center; San Francisco California USA