1Madsen SM, Schlichting P, Davidsen B, et al. An Open-labeled randomized study comparing systemic interferon-alpha-2A and prednisolone enemas in the treatment of left-sided ulcerative colitis. Am J Gastroenterol,2001, 96: 1807-1815.
2Musch E, Andus T, Malek M. Induction and maintenance of clinical remission by interferon-β in patients with steroid-refractory active ulcerative colitis-an open long-term pilot trial. Aliment Pharmacol Ther, 2002, 16:1233-1239.
3Rachmilewitz D. coated mesalazine ( 5-aminosalicylic acid) versus sulphasalazine in the treatment of active ulcerative colitis: a randomised trial. B M J, 1989, 298:82-86.
4Sumer N, Palabiyikoglu M. Induction of remission by interferon-alpha in patients with chronic active ulcerative colitis. Eur J Gastroenterol Hepatol, 1995, 7: 597-602.
