1. Department of Pediatrics (V.V.), Uniformed Services University of the Health Sciences, Bethesda, Maryland 20814;
2. Division of Endocrinology and Metabolism (S.H., M.X.), Department of Medicine, the Johns Hopkins University School of Medicine, Baltimore, Maryland 21287;
3. Department of Otolaryngology (G.W., J.C.X., B.T.), Baltimore, Maryland 21287;
4. Center for Endocrine Surgery (A.L., V.S.), Kiev 25200, Ukraine