1. From the Division of Epidemiology, Department of Internal Medicine, University of Utah, Provo, UT (MAM, CS, JSH, and MLS); the Moffitt Cancer Center, Tampa, FA (ARG); the Department of Biology, University of Colorado, Denver, CO (LH); the Department of Preventive Medicine and Biometrics, University of Colorado School of Medicine, Denver, CO (TB); and the Department of Epidemiology and Population