1 Department of Gastroenterology, Herlev Hospital, University of Copenhagen, Herlev, Denmark.
2 Department of Gastroenterology, Herlev Hospital, University of Copenhagen, Herlev, Denmark; Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark.
3 Department of Gastroenterology, Herlev Hospital, University of Copenhagen, Herlev, Denmark; Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark. Electronic address: ole.haagen.nielsen@regionh.dk.