1 Department of Surgery, Maastricht University, Maastricht, the Netherlands; Department of Gastroenterology and Hepatology, Maastricht University, Maastricht, the Netherlands; School of Nutrition and Translational Research in Metabolism (NUTRIM), Maastricht University, Maastricht, the Netherlands. Electronic address: b.thomassen@maastrichtuniversity.nl.
2 Department of Clinical Epidemiology and Medical Technology Assessment (KEMTA), Maastricht University Medical Centre+, Maastricht, the Netherlands; Care and Public Health Research Institute (CAPHRI), Maastricht University, Maastricht, the Netherlands.
3 Department of Internal Medicine, Catharina Hospital, Eindhoven, the Netherlands.
4 Department of Medical Psychology, Amsterdam University Medical Center, Amsterdam, the Netherlands.
5 Department of Surgery, Reinier de Graaf Group, Delft, the Netherlands.
6 National Association of Dutch Health Insurers, Zeist, the Netherlands.
7 Department of Medical Oncology, University Medical Center Utrecht, Utrecht University, Utrecht, the Netherlands; Department of Research and Development, Netherlands Comprehensive Cancer Organisation, Utrecht, the Netherlands.
8 Department of Medical Oncology, Isala Oncology Center, Zwolle, the Netherlands.
9 Department of Surgery, Maastricht University, Maastricht, the Netherlands; School of Nutrition and Translational Research in Metabolism (NUTRIM), Maastricht University, Maastricht, the Netherlands; Department of Surgery, Maastricht University Medical Center+, Maastricht, the Netherlands; School for Oncology and Developmental Biology (GROW) Maastricht University, Maastricht, the Netherlands.
10 Department of Surgery, Maastricht University Medical Center+, Maastricht, the Netherlands.
11 Department of Gastroenterology, Zuyderland Medical Center, Sittard-Geleen, the Netherlands.
12 Department of Surgery, Hospital Group Twente, Almelo, the Netherlands.
13 Care and Public Health Research Institute (CAPHRI), Maastricht University, Maastricht, the Netherlands; Department of Family Medicine, Maastricht University, Maastricht, the Netherlands.