By Hoff Geir   Bretthauer Michael   Huppertz-Hauss Gert   Kittang Eirik   Stallemo Asbjørn   Høie Ole   Dahler Stein   Nyhus Sverre   Halvorsen Fred-Arne   Pallenschat Jens   Vetvik Kåre   Kristian Sandvei Per   Friestad Joachim   Pytte Reidar   Coll Peter   in Scandinavian Journal of Gastroenterology

ISSN:0036-5521|41|4|481-487

Informa Healthcare‎(2006)‎

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