Hetzel, D J Olsalazine in the treatment of active ulcerative colitis: a placebo controlled clinical trial and assessment of drug disposition. [electronic resource] - Scandinavian journal of gastroenterology. Supplement 1988 - 61-9 p. digital Publication Type: Clinical Trial; Comparative Study; Journal Article; Randomized Controlled Trial; Research Support, Non-U.S. Gov't ISSN: 0085-5928 Standard No.: 10.3109/00365528809101552 doi Subjects--Topical Terms: Aminosalicylic Acids--adverse effectsClinical Trials as TopicColitis, Ulcerative--drug therapyDouble-Blind MethodDrug ToleranceFemaleHumansMaleMiddle AgedProctitis--drug therapyRandom Allocation