2[1]Holger KE, Ellice SL, William RC. Regional anesthesia and analgesia for labor and delivery. N Engl J Med,2003,348:319-332.
3[2]Babara LLeighton, Stephen HH. The effects of epidural analgesia on labor, maternal, and neonatal outcomes: A systematic review. Am J Obstet Gynecol,2002,186:S69-77.
4[3]Alexander JM, Sharma SK, McIntire DD, et al. Epidural analgesia lengthens the Friedman active phase of labor. Obstet Gynecol,2002,100:46-50.
5[4]Zhang J, Troendle JF, Yancey MK. Reassessing the labor curve. Am J Obstet Gynecol,2002,187:824-828.
6[7]Theodore RM,David MK. Labor pain management in United States: Understanding patterns and the issue of choice. Am J Obstet Gynecol,2002,186:S173-180.
7Smith GC,Pell JP,Dobbie R.Ceasarean section and risk of unexplained stillbirth in subsequent pregnancy[J].Lancet,2003,362(9 398):1 774～1 775.
8Labib NY, Mortada MM , Guirguis WW, et al. Cesarean section deliveries in one health insurance hospital in alexandria [ J ]. Egypt Public Health Assoc , 2007 , 82 (324) : 2992 -3171.
9Schuler BM , Roth2kleiner M. Respiratory distress of the neonate and the rate of caesarean section have increased over the last 30years , Is there a link ? [J]. Rev Med Suisse , 2008 , 4 (146) :504-506, 508.
