1. Crohn's disease: course, treatment and long term prognosis;Cooke;Q J Med,1980
2. Recurrence and reoperation for Crohn's disease. The role of disease location in prognosis;Lock;N Engl J Med,1981
3. Crohn's disease in Stockholm county 1955–1974;Hellers;Acta Chir Scand,1979
4. The problem of postoperative recurrence;Greenstein;Mt Sinai J Med,1983
5. The role of resection margin frozen section in the surgical management of Crohn's disease;Hamilton;Surg Gynecol Obstet,1985