1. U.S. says 349,000 cesareans in 1991 were not necessary. New York Times, April 23, 1993.
2. Notzon FC, Placek PJ, Taffei SM. Comparison of national cesarean section rates. N Engl J Med 1987;316:386–389.
3. Anderson GM, Lomas J. Recent trends in cesarean section in Ontario. Can Med Assoc J 1989;141:1049–1053.
4. Gleicher N. Cesarean section rates in the United States: the short-term failure of the National Consensus Development Conference in 1980. JAMA 1984;252:3273–3276.
5. Quilligan EJ. Cesarean section, 1988: To have or have not! West J Med 1988;149:700–703.