1. From the Department of Pediatrics, University of Texas Southwestern Medical Center, Dallas, Tex (A.K.A., H.N., P.C.W.); the Division of Endocrinology, University of Ancona, Ancona, Italy (G.G., F.M.); the Division of Medical Sciences, University of Birmingham Queen Elizabeth Hospital, Birmingham, UK (G.L., M.R., C.McT., P.M.S.); Instituto di Ematologia e di Endocrinologia, Universita degli studi Sassari, Sassari, Italy (M.P.); the Division of Nephrology, Dialysis and Hypertension, University...