00422nas a2200157   4500000000100000000000100001008004100002100001600043700001200059700001300071700001600084245011400100300001100214490000700225022003200232       2005                            d1 aT. van Staa1 aT. Card1 aR. Logan1 aH. Leufkens00a5-Aminosalicylate use and colorectal cancer risk in inflammatory bowel disease: a large epidemiological study  a1573-80 v54  a0017-5749 (Print) 0017-5749