1. Department of Internal Medicine Sector of Endocrinology Erasmus MC Rotterdam The Netherlands
2. Department of Internal Medicine, Division of Endocrinology, University of Groningen University Medical Centre Groningen The Netherlands
3. Department of Medicine 1, Division of Endocrinology Friedrich‐Alexander University, Erlangen‐Nuremberg Erlangen Germany
4. Department of Gastroenterology Azienda Provinciale Servizi Sanitari (APSS) Trento Italy
5. Department of Endocrinology and Neuroendocrine Tumours Medical University of Silesia Katowice Poland
6. Department of Gastroenterology and Pancreatology Beaujon Hospital (APHP) and Paris 7 University Clichy France
7. Department of Medical Oncology, Amsterdam UMC University of Amsterdam, Cancer Center Amsterdam Amsterdam The Netherlands
8. Department of Gastroenterology University Hospital Ghent Ghent Belgium
9. Department of Endocrinology, Royal Hallamshire Hospital Sheffield Teaching Hospitals NHS Foundation Trust Sheffield UK