1. Department of Surgery Maastricht University, School of Nutrition and Translational Research in Metabolism (NUTRIM) Maastricht the Netherlands
2. Department of Clinical Epidemiology and Medical Technology Assessment, Care and Public Health, Research Institute (CAPHRI) Maastricht University Medical Centre Maastricht the Netherlands
3. Department of Surgery Maastricht University Medical Centre Maastricht the Netherlands
4. Department of Surgery Medical Centre Leeuwarden Leeuwarden the Netherlands
5. Department of Surgery Zuyderland Medical Centre Sittard the Netherlands
6. Department of Surgery Maastricht University, School for Oncology and Reproduction (GROW) Maastricht the Netherlands