1 Department of Gastroenterology and Hepatology, Radboud University Medical Center, Nijmegen, the Netherlands; Department of Vascular Medicine, Amsterdam University Medical Centers, Amsterdam, the Netherlands. Electronic address: k.c.vanson@amsterdamumc.nl.
2 Department of Gastroenterology and Hepatology, Leiden University Medical Center, Leiden, the Netherlands.
3 Department of Vascular Medicine, Amsterdam University Medical Centers, Amsterdam, the Netherlands.
4 Department of Gastroenterology and Hepatology, Radboud University Medical Center, Nijmegen, the Netherlands.