6[9]Christensen LA,Jacobsen BA.5-Aminosalicylic acid derivatives.Clinical and pharmaceutical evaluation,1989,35,3-10.
7[10]Mutlu EA,Farhadi A,Keshavarzian A.New developments in the treatment of inflammatory bowel disease.Expert Opin Investig Drugs,2002,11:365-385.
8[11]Christensen LA.5-Aminosalicylic acid containing drugs.Delivery,fate,and possible clinical implications in man,2000,47:20-41.
9[12]Sutherland L,Macdonald JK.Oral 5-aminosalicylic acid for maintenance of remission in ulcerative.Colitis,2006,19:544.
10[15]Mahmud N,Weir DG,Kelleher D.Systemic levels of free 5-aminosalicylic acid depend on the nature of the5-aminosalicyclic acid derivative and not on disease activity or extent in patients with inflammatory bowel disease.