1. Crohn BB, Ginzburg G, Oppenheimer GD. Regional ileitis: a pathologic and clinical entity. J Am Med Assoc 1932;99:1323–9.
2. Nugent FW, Kolack PF. Differential diagnosis of chronic ulcerative colitis and Crohn’s disease of the colon. In: Kirsner JB, Shorter RG, editors. Inflammatory Bowel Disease. Philadelphia, PA: Lea & Febiger; 1988:194–6.
3. Farmer RG, Hawk WA, Turnbull RB, Jr. Clinical patterns in Crohn’s disease: a statistical study of 615 cases. Gastroenterology 1975;68:627–35.
4. Watier A, Devroede G, Perey B et al. Small erythematous mucosal plaques: an endoscopic sign of Crohn’s disease. Gut 1984;21:835–9.
5. Lichtenstein JE. Radiologic pathologic correlation of inflammatory bowel disease. Radio] Clin N Am 1987;25:3–24.