6Jaue ESJE.Caesarean section-a brief history,history of cesarean section[J].The American National Library of Medicine,1993.
7Fraser DM Cooper MA et al.(14th Ed) Myles Textbook for Midwives[M].Chuuchill Livingstond,Edinburgh,2003 Reprinted,2007:584-585.
8American Academy of Pediatrics and American College of Obstetricians and Gynecologists Guidelines for Prenatal Care[M].Washington,DC:American Academy of Pediatrics and American College of obstetricians and Gynecologists;1997:217.
9Thomas J,Paranjothy S.Royal College of Obstetricians and Gynaecologists Clinical Effectiveness Support Unit[M].The National Sentinel Caesarean Section Audit Report.London:RCOG Press,2001:20.
10Clinical Negligence Scheme for Trusts.General Standards[M].NHS Litigation Authority,2001.
