1. Barbara Davis Center; University of Colorado Denver; Aurora CO USA
2. Westville Hospital; Durban South Africa
3. DECCP; Clinique Pediatrique/CHL; Luxembourg Luxembourg
4. Institute of Endocrinology and Diabetes; Westmead Australia
5. Department of Pediatrics; Uddevalla Hospital; Uddevalla Sweden
6. Department of Pediatrics; University of Cambridge; Cambridge UK