Letter: Salicylazosulfapyridine in clinical practice.
D000636:Aminosalicylic Acids / Q000378:metabolism; D003093:Colitis, Ulcerative / Q000378:metabolism; D003424:Crohn Disease / Q000378:metabolism; D006801:Humans; D013424:Sulfanilamides / Q000378:metabolism; D012460:Sulfasalazine / Q000378:metabolism*
D000636:Aminosalicylic Acids; D013424:Sulfanilamides; D012460:Sulfasalazine