Jørgensen Maiken Thyregod, Mortensen Michael Bau, Gerdes Anne-Marie, De Muckadell Ove B Schaffalitzky
Department of Medical Gastroenterology, Odense University Hospital, University of Southern Denmark, Odense, Denmark.
Scand J Gastroenterol. 2008;43(4):387-97. doi: 10.1080/00365520701775229.