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14by Bernersen, B., Johnsen, R., Straume &, B., Burhol, P. G.Get access
Published in Scandinavian Journal of Gastroenterology (1992)
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15by Asfeldt, Anne Mette, Straume, Bjørn, Steigen, Sonja Eriksson, Løchen, Maja-Lisa, Florholmen, Jon, Bernersen, Bjørn, Johnsen, Roar, Paulssen, Eyvind J.Get access
Published in European Journal of Epidemiology (2008)
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16by Asfeldt, Anne Mette, Steigen, Sonja Eriksson, Løchen, Maja-Lisa, Straume, Bjørn, Johnsen, Roar, Bernersen, Bjørn, Florholmen, Jon, Paulssen, Eyvind J.Get access
Published in European Journal of Epidemiology (2009)
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