1. Endocrinology Service and Research Center (S.W.-R., G.V.V., J.D.), Montréal H3T 1C5, Canada
2. Centre Hospitalier Universitaire Sainte-Justine, and Departments of Pediatrics (S.W.-R., G.V.V., J.D.), Montréal H3T 1C5, Canada
3. Pediatric Endocrinology and Diabetology Unit (S.S.-V.), Centre Hospitalier Universitaire Vaudois, University of Lausanne, CH-1000 Lausanne, Switzerland
4. Nuclear Medicine Service (R.L., S.T.), Montréal H3T 1C5, Canada
5. Medical Imaging (R.L., S.T.), University of Montréal, Montréal H3T 1C5, Canada