1. Department of Internal Medicine Franciscus Gasthuis & Vlietland Rotterdam The Netherlands
2. Obesity Center CGG Rotterdam The Netherlands
3. Department of Statistics and Education Franciscus Gasthuis & Vlietland Rotterdam The Netherlands
4. Department of Gastroenterology and Hepatology Franciscus Gasthuis & Vlietland Rotterdam The Netherlands
5. Department of Internal Medicine, Division of Endocrinology Erasmus University Medical Center Rotterdam The Netherlands
6. Department of Pediatrics Franciscus Gasthuis & Vlietland Rotterdam The Netherlands
7. Department of Bariatric Surgery Franciscus Gasthuis & Vlietland Rotterdam The Netherlands
8. Department of Cardiology Franciscus Gasthuis & Vlietland Rotterdam The Netherlands
9. Department of Gastroenterology and Hepatology Erasmus Medical Centre Rotterdam The Netherlands
10. Department of Vascular Medicine Amsterdam UMC Amsterdam The Netherlands
11. Department of Gastroenterology and Hepatology Leiden UMC Leiden The Netherlands
12. Julius Centre for Health Science and Primary Care University Medical Center Utrecht Utrecht The Netherlands
13. Julius Clinical Zeist The Netherlands