1. Correlation of decrease in perinatal mortality and decrease in cesarean section rates;O’Driscoll;Obstet Gynecol,1983
2. Implications of increasing rates of caesarean section;Derom,1987
3. Cesarean childbirth;BMJ,1981
4. Predictive value of cervimetric labour patterns in primigravidae;Cardozo;Br J Obstet Gynaecol,1982
5. Active management of labor associated with a decrease in the cesarean section rate in nulliparas;Turner;Obstet Gynecol,1988