1Correy JF,Watkins RA,Bradfield GF. Spontaneous pregnancies and pregnancies as a result of treatment on an in vitro fertilization program terminating in ectopic pregnancies or spontaneous abortions. Fertil Steril, 1988, 50(1):85~88.
2Kurjak A, Schulman H, Zudenigo D, et al. Subchorionic hematomas in early pregnancy: clinical outcome and blood flow patterns. J Matern Fetal Med, 1996,5(1):41~44.
4Bennett GL, Bromley B, Lieberman E, et al. Subchorionic hemorrhage in first-trimester pregnancies: prediction of pregnancy outcome with sonography. Radiology,1996, 200(3):803~806.
5Ben-Haroush A, Yogev Y, Mashiach R,et al. Pregnancy outcome of threatened abortion with subchorionic hematoma: possible benefit of bed-rest Isr-Med-Assoc-J,2003,5(6):422~424.
1Guideline JSC. Pregnancy outcomes after assisted reproductive technology[ J]. J Obstet Gynaecol Can ,2006,28 ( 3 ) :220-233.
2Jauniaux E, Van Oppenraaij RHF, Burton GJ. Obstetric outcome after early placental complications [ J ]. Curr Opin Obstet Gynecol, 2010,22 (6) :452-457.
3Asato K, Mekaru K, Heshiki C, et al. Subchorionie hematoma occurs more frequently in in vitro fertilization pregnancy [ J ]. Eur J Obstet Gy-necol Reprod Bio1,2014 ,181:41-44.
4Xiang L, Wei Z, Wu J, et al. Clinical significance of first-trimester in- trauterine haematomas detected in pregnancies achieved by IVF-em- bryo transfer [ J ]. Reprod Biomed Online,2014,29 (4) :445-451.
5Johns J, Hyett J, Jauniaux E. Obstetric Outcome After Threatened Mis- carriage with and without a Hematoma on Ultrasound [ J ]. Obstet Gy- necol,2003,102 ( 3 ) :483-487.
6Johns J, Jauniaux E. Threatened miscarriage as a predictor of obstetric outcome [ J ]. Obstet Gyneco1,2006,107 (4) :845-850.
7Pearlstone M, Baxi L Subchorionic hematoma : a review [ J ]. Obstet Gynecol Surv, 1993,48 ( 2 ) :65-68.
8Foidart JM, Seak-San S, Emonts P, et al. Vascular placental pathology in high-rlsk groups:definition and synopsis[ J]. Annales de medecine interne,2002,154 ( 5-6 ) :332-339.
9Nagy S, Bush M, Stone J, et al. Clinical significance of subchorionie and retroplacental hematomas detected in the first trimester of preg- nancy[ J]. Obstet Gyneeo1,2003,102( 1 ) :94-100.
10Copperman AB, Wells V, Luna M, et al. Presence of hydrosalpinx cor- related to endometrial inflammatory response in vivo [ J ]. Fertil Ster- il,2006,86(4) :972-976.