Coated oral 5-aminosalicylic acid therapy for mildly to moderately active ulcerative colitis. A randomized study.
N Engl J Med. 1987 Dec 24;317(26):1625-9. doi: 10.1056/NEJM198712243172603.
N Engl J Med. 1987.
PMID: 3317057
Clinical Trial.