1. From Section of Endocrinology, Department of Internal Medicine, Yale School of Medicine, New Haven, CT (K.J.L., S.E.I.); Department of Healthcare Policy and Research, Weill Cornell Medical College and Memorial Sloan Kettering Cancer Center, New York, NY (J.H.F.); and Center for Clinical Epidemiology and Biostatistics, Perelman School of Medicine at the University of Pennsylvania, Philadelphia (S.H.).