1. Department of Pediatrics, Thomas Jefferson University, Philadelphia, Pennsylvania;
2. Department of Pediatric Endocrinology and Diabetes, Necker-Enfants Malades Hôpital, Paris, France;
3. Department of Medicine, Massachusetts General Hospital, Boston, Massachusetts;
4. Department of Molecular and Clinical Endocrinology and Oncology, Federico II University of Naples, Naples, Italy;
5. Department of Pediatrics, Baystate Children's Hospital, Springfield, Massachusetts; and
6. Department of Women and Child Health, Hospital for Children and Adolescents, University of Leipzig, Leipzig, Germany