1. Department of Surgery, NUTRIM School of Nutrition and Translational Research in Metabolism, Maastricht University, P.O. Box 616, 6200 MD Maastricht, The Netherlands
2. Biomolecular Mass Spectrometry and Proteomics, Bijvoet Center for Biomolecular Research and Utrecht Institute for Pharmaceutical Sciences, Utrecht University, Padualaan 8, Utrecht 3584 CH, The Netherlands
3. Maastricht Multimodal Molecular Imaging Institute (M4i), Maastricht University, 6200 MD Maastricht, The Netherlands
4. Department of General, Visceral- and Transplantation Surgery, RWTH Aachen University Hospital, Pauwelsstraße
30, 52074 Aachen, Germany