By Ragnarsson G.   Hallböök O.   Bodemar G.   in Scandinavian Journal of Gastroenterology

ISSN:0036-5521|36|8|833-842

Informa Healthcare‎(2001)‎

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By Morren G. L.   Ryn A-K.   Hallböök O.   Sjödahl R.   in Diseases of the Colon & Rectum

ISSN:0012-3706|47|5|787-792

Springer Publishing Company ‎(2004)‎

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By Walter S.   Hallböök O.   Gotthard R.   Bergmark M.   Sjödahl R.   in Scandinavian Journal of Gastroenterology

ISSN:0036-5521|37|8|911-916

Informa Healthcare‎(2002)‎

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