Oral mesalamine (Pentasa) as maintenance treatment in Crohn’s disease: a multicenter placebo-controlled study. The Groupe d’Etudes Therapeutiques des Affections Inflammatoires Digestives (GETAID).

Gendre JP, Mary JY, Florent C, Modigliani R, Colombel JF, Soule JC,Galmiche JP, Lerebours E, Descos L, Viteau JM, et al. (Gastroenterology. 1993 Feb;104(2):435-9.)

http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=pubmed&dopt=Abstract&list_uids=8425685&query_hl=1&itool=pubmed_docsum