1. The frequency of complications in cesarean and non-cesarean delivery, 1970 and 1978;Placek;Public Health Rep,1983
2. Comparison of national cesarean section rates;Notzon;N Engl J Med,1987
3. Statement on cesarean childbirth;National Institutes of Health Consensus Development Task Force;Am J Obstet Gynecol,1981
4. Reasons for the rising cesarean delivery rates, 1978-1984;Shiono;Obstet Gynecol,1987
5. Planned vaginal delivery following cesarean section;Gibbs;Clin Obstet Gynecol,1980