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3Vellekoop J, Vrouenraets FP, van der Steeg JW, et al. Indications and results of labour induction in nulliparous women: an interview among obstetricians, residents and clinical midwives. Eur J Obstet Gyneeol Reprod Biol,2009 , 146 (2) :56-159.
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7Jozwiak M, Bloemenkamp KW, Kelly AJ, et al. Mechanical methods for induction of labour. Cochrane Database Syst Rev, 2012 , 3 : CD001233.
8Cromi A, Ghezzi F, Uccella S, et al. A randomized trial of preinduction cervical ripening: dinoprostone vaginal insert versus double-balloon catheter. Am J Obstet Gynecot, 2012; 207(2) :125. e1-e7.
9Salim R, Zafran N, Nachum Z, et al. Single-balloon compared with double-balloon catheters for induction o, labor: a randomized controlled trial. Obstet Gynecol, 2011 , 118 ( 1 ) : 79- 86.
10Vaknin Z, Kurzweil Y, Sherman D. Foley catheter balloon vs locally applied prostaglandins for cervical ripening and labor induction., a systematic review and metaanalysis. Am J Obstet Gynecol,2010 ,203(5) :418-429.
