1. IWGDF; Heemsteedse Dreef 90 Heemstede The Netherlands
2. Department of Endocrinology; University Hospital of Malmö; Malmö Sweden
3. Geneva University Hospitals and Faculty of Medicine; Geneva Switzerland
4. University of Oxford; Oxford UK
5. Department of Surgery; Almelo and Hengelo The Netherlands
6. Div. Endocrinology; MUMC+, CARIM and CAPHRI Institutes; Maastricht The Netherlands