1. From the Section of Bone and Mineral Disorders, Department of Endocrine Neoplasia and Hormonal Disorders, University of Texas M.D. Anderson Cancer Center, and the Lawrence Bone Disease Program of Texas, Houston, and the Cancer Prevention Research Institute of Texas, Austin (T.A.G.); and the Section of Endocrinology and Metabolism, Department of Medicine, Yale School of Medicine, New Haven, CT (J.J.W.).