1. Centre for Endocrinology, William Harvey Research Institute, St. Bartholomew’s and The Royal London School of Medicine and Dentistry, London EC1M 6BQ, UK.
2. Gothenburg Pediatric Growth Research Center, University of Gothenburg, Institute of Clinical Sciences, Department of Pediatrics, The Queen Silvia Children's Hospital, Gothenburg, Sweden.
3. Pediatric Endocrinology, Women and Child Health, Karolinska Institute, Stockholm, Sweden.
4. Division of Pediatric Endocrinology, Meyer Children's Hospital, Rambam Medical Center, and Rappaport Family Faculty of Medicine and Research Institute, Technion–Israel Institute of Technology, Haifa, Israel.