1. Colonoscopy during an attack of severe ulcerative colitis is a safe procedure and of great value in clinical decision-making;Alemyehu;Am J Gastroenterol,1991
2. Toxic megacolon associated with methotrexate therapy;Atherton;Gastroenterology,1984
3. Endoscopic colonic decompression of toxic megacolon: Placement of colonic tube and steroid colon clysis;Banez;Am J Gastroenterol,1987
4. Steroids and toxic megacolon;Binder;Gastroenterology,1979
5. Depth of ulceration in ulcerative colitis;Bucknell;Gastroenterology,1980