1. An experiment to determine the active therapeutic moiety of Sulphasalazine;AKA, I.Khan; SC, Piris J.Truelove;Lancet,1977
2. Effects of Sulphapyridine, 5-aminosalicylic acid and placebo in patients with idiopathic proctitis; a study to determine therapeutic moiety of Sulphasalazine;PAM, Van Hees; JH, Bakker; JHM, Van Tongeren,1980
3. Therapeutic efficacy of Sulphasalazine and its metabolites in patients with ulcerative colitis and Crohn's disease;Klotz, U.; Maier, K.; Fischer, C.; Heinkel, K.;N EnglJ Med,1980
4. Maintenance of remission in ulcerative colitis with oral preparations of 5aminosalicylic acid;Dew, M.J.; Hughes, P.; Harries, A.D.;Br Med J,1982
5. Role of prostaglandins in ulcerative colitis;Sharon, P.; Ligumsky, M.; Rachmilewitz, D.; Zor, U.;Gastroenterology,1978