1. Department of Vascular Surgery, Medical Spectrum Twente, Enschede, Netherlands
2. Department of Surgery, Leiden University Medical Center, Leiden, Netherlands
3. Medical School Twente, Medisch Spectrum Twente, Enschede, Netherlands
4. Department of Gastroenterology, Medisch Spectrum Twente, University Medical Center Groningen, Enschede, Netherlands
5. Multimodality Medical Imaging M3i Group, Faculty of Science and Technology, Technical Medical Centre, University of Twente, Enschede, Netherlands
6. Medisch Spectrum Twente (t.n.v. R.H. Geelkerken, Backoffice Chirurgie B11), Postbus 50.000, 7500 KA, Enschede, Netherlands