keywords 5-ASA ACUTE-PANCREATITIS AMINOSALICYLATE THERAPY COLORECTAL-CANCER COST-EFFECTIVENESS DOUBLE-BLIND Gastroenterology & Hepatology General & Internal Medicine INFLAMMATORY-BOWEL-DISEASE Life Sciences & Biomedicine MMX MESALAMINE Medicine, General & Internal RELEASE ORAL MESALAMINE RETROGRADE COLONIC SPREAD RISK-FACTOR Science & Technology Sulfasalazine Ulcerative colitis Ulcerative colitis therapies