1. Department of Epidemiology; College of Public Health, University of Iowa; Iowa City Iowa
2. Holden Comprehensive Cancer Center; University of Iowa; Iowa City Iowa
3. Department of Endocrinology; Diabetes, Metabolism and Nutrition, Mayo Clinic; Rochester Minnesota
4. Department of Internal Medicine; Carver College of Medicine, University of Iowa; Iowa City Iowa
5. Department of Preventive Medicine; University of Tennessee Health Science Center; Memphis Tennessee
6. Division of Hematology and Medical Oncology; Joan and Sanford I. Weill Department of Medicine, Weill Cornell Medicine; New York New York
7. Department of Internal Medicine; Harbor UCLA Medical Center; Torrance California