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Leber, Magen, Darm|November 1, 1983
[Colorectal biopsy in inflammatory intestinal diseases]B Morson
Bulletin of the World Health Organization|January 1, 1990
Risk and surveillance of individuals with colorectal polyps. Who Collaborating Centre for the Prevention of Colorectal CancerS J Winawer, M J O'Brien, J D Waye, et al.
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