5Fonseca L, Wood HC, Lucas M J, et al. Randomized trial of preinduction cervical ripening: misoprostol vs oxytocin [J]. Am J Obstet Gynecol,2008,199 ( 3 ) : 305. e1 -5.
6Alfirevic Z, Kelly A J, Dowswell T. Intravenous oxytocin alone for cervical ripening and induction of labour[ J]. Cochrane Database Syst Rev,2009, (4) :CD003246.
7ACOG Committee on Practice Bulletins-Obstetrics. ACOG Practice Bulletin No. 107 : Induction of labor [ J ]. Obstet Gynectol, 2009,114(2 Pt 1 ) :386-397.
8Society of Obstetricians and Gynaecologists of Canada. SOCG Clinical Practice Guideline. Induction of labour at term [ J ]. J Obstet Gynaecol Can ,2001,23 ( 8 ) :717-728.
9Cunningham FG. Williams obstetrics[ M]. 23rd ed. New York (NY) : McGraw-Hill, 2010 : Chap 22.
10Wen T, Beceir A, Xenakis E, et al. Is there a maximum effective dose of Pitocin? [ J ]. Am J Obstet Gynecol, 2001,185 : S212.
