1. Department of Paediatric Endocrinology; Universitair Ziekenhuis Brussel; Brussels Belgium
2. Faculty of Psychology and Educational Sciences; Vrije Universiteit Brussel; Brussels Belgium
3. Division of Paediatric Endocrinology; Inselspital; University Children's Hospital; Bern Switzerland
4. Department of Paediatrics; Universitair Ziekenhuis Antwerp; Antwerpen Belgium
5. Biostatistics; Quanticate; Herts UK
6. Pfizer Belgium; Brussels Belgium