1. Department of Paediatric Endocrinology; Hospital Infantil Universitario Niño Jesús; Madrid Spain
2. Institute of Biomedical and Clinical Sciences; University of Exeter Medical School; Exeter UK
3. Department of Clinical Science; University of Bergen; Bergen Norway
4. Department of Pediatrics; Haukeland University Hospital; Bergen Norway
5. Department of Pediatrics, Oncology, Hematology and Diabetology; Medical University of Lodz; Lodz Poland
6. Division of Pediatric Endocrinology and Metabolism, Department of Pediatrics; Washington University School of Medicine, St Louis Children's Hospital; St. Louis MO USA
7. Department of Pediatric Endocrinology; National Hospital for Pediatrics; Hanoi Vietnam
8. The Children's Hospital at Westmead and Discipline of Pediatrics and Child Health; University of Sydney; Sydney Australia
9. School of Women's and Children's Health; University of New South Wales; Sydney Australia