1. Center for Applied Genomics (D.L., C.H., H.H.), Philadelphia, Pennsylvania 19104
2. Division of Endocrinology and Diabetes (E.E.O., M.A.L.), Philadelphia, Pennsylvania 19104
3. Division of Allergy and Immunology (F.T.), Philadelphia, Pennsylvania 19104
4. Endocrinology and Diabetes Unit (D.L.M.), Vancouver, British Columbia, Canada V5Z 4H4
5. British Columbia Children's Hospital, and Department of Pediatrics (D.L.M.), University of British Columbia, Vancouver, British Columbia, Canada V5Z 4H4
6. Division of Pulmonary Medicine (H.H.), Philadelphia, Pennsylvania 19104
7. Department of Pediatrics (H.H., M.A.L.), University of Pennsylvania Perelman School of Medicine, Philadelphia, Pennsylvania 19104
8. Center for Bone Health (M.A.L.), The Children's Hospital of Philadelphia, Philadelphia, Pennsylvania 19104