1. Department of Pediatrics (K.J., A.R., J.C., A.P., V.V.), Uniformed Services University of the Health Sciences, Bethesda, Maryland 20814
2. Department of Medicine (Y.K., J.K.-G., K.B.), Washington, DC 20010
3. Division of Endocrinology, Washington Hospital Center, and Department of Surgery (L.B.), Medstar Georgetown University Hospital, Washington, DC 20010