1. Division of Human Nutrition and Health, Wageningen University & Research, Wageningen, the Netherlands
2. Department of Surgery, Radboud University Medical Center, Nijmegen, the Netherlands
3. Department of Surgery, Hospital Gelderse Vallei, Ede, the Netherlands
4. Department of Gastroenterology and Hepatology, Hospital Gelderse Vallei, Ede, the Netherlands
5. Department of Internal Medicine, Admiraal de Ruyter Hospital, Goes, the Netherlands
6. Department of Surgery, Hospital Group Twente ZGT, Almelo, the Netherlands