1Stein JC, Wang R, Adler N, et al. Emergency physician ultrasonogra- phy for evaluating patients at risk for ectopie pregnancy: a meta - a- nalysis. Ann Emerg Med,2010,56 (6) :674 ~ 683.
2Edozien LC. Non - surgical management of ectopic pregnancy : appro- priate risk management must be in place. Arch Gynecol Obstet ,2011, 283 (5) :925 ~ 927.
3Goksedef BP, Kef S, Akca A, et al. Risk factors for rupture in tubal ectopic pregnancy: definition of the clinical findings. European jour- nal of obstetrics, gynecology, and reproductive biology, 2011,154 ( 1 ) :96 ~99.
4Bakken IJ, Skjeldestad FE, Lydersen S, et al. Births and ectopic pregnancies in a large cohort of women tested for Chlamydia trachoma- tis. Sex Transm Dis,2007,34(10) :739 ~743.
5Vial Y, Petignat P, Hohlfeld P. Pregnancy in a cesarean scar[J] . Ultrasound in Obstet&Gynecology, 2000, 16 (6): 592-593.
6Vial Y, Petignat P, Hohlfeld P. Pregnancy in a Cesarea scar [J]. Ultrasound Obstet Gynecol, 2000, 16 (4) : 592-593.
7Miller DA, Chollet JA, Goodwin TM. Clinical risk factors for placenta previa-placenta accrete [J]. American Journal of Obstetrics and Gynecology, 1997, 177 (1): 210 -214.
8Tan G, Chong YS, Biswas A. Cesarean scar pregnancy: a diagnosis to consider carefully in patients with risk factors [J].Ann Acad Med Singapore, 2005, 34 (2): 216-219.
9Chie L, Levine D. Sonography of the lower uterine segment [J] . Ultrasound Clinics, 2006 (1) : 303-319.
10Fylstra DL. Ectopic pregnancy within a cesarean scar a review [J]. Obstetrical & gynecological survey, 2002, 57 (8): 537- 543.