Shapira, Micha M.D.; Tamir, Ada D.Sc.
From the Gastroenterology Unit, Poriyah Hospital (M.S.), Tiberias; and Department of Community Medicine and Epidemiology, Technion Faculty of Medicine (A.T.), Haifa, Israel.
Received August 15, 1995. Sent for revision September 12, 1995. Accepted February 5, 1996.
Address correspondence and reprint requests to Dr. M. Shapira, Gastroenterology Unit, Poriyah Hospital, Tiberias, Israel.