4Lumme RH,Saarikoski SV. Monoamniotic twin pregnancy. Acta Genet Med Gemellol. 1986.35 ( 1 -2 ) : 99-105.
5Traore Y, Dicko TF,Teguete B,et al. Frequency of cord prolapse: eti- ological factors and fetal prognosis in 47 cases in a health center. Mali Med, 2006,21 ( 1 ):25-29.
6Erdemoglu M,Kale A,Kuyumcuoglu U,et al. Umbilical cord pro- lapse in the southeast region of Turkey: evaluation of 79 cases.J Pe- diat,2010,37(2) : 141-143.
7Obeidat N,Zayed F,Alchalabi H,et al.Umbilical cord prolapse: a 10- year retrospective study in two civil hospitals,North Jordan. J Obstet Gynaecol, 2010,30(3 ) : 257-260.
8Murphy DJ,MacKenzie IZ.The mortality and morbidity associated with umbilical cord prolapse. Br J Obstet Gynaecol, 1995,102 (10) : 826-830.
6Bema Dilbas, Esmen Ozturkoglu, Serdar Dilbaz. Risk factorS and perinatal outcomes associated with umbilical cord prolapse[ J]. Arch Gynecol Obstet,2006,274 : 104 - 107.
7D Uygar, SKis, R Tuneer. Risk factors and infant outcomes associated with umbilical cord prolapse[ J]. International Journal of Gynecology Obstetrics,2002,78 : 127 - 130.
8B Kahana, E Sheiher, A Levy. Umbilical cord prolapse and perinatal outcomes[ J ]. International Journal of Gyneeology Obstetrics, 2004, 84 : 127 - 132.
