1Wramsby ML,Sten LS, Bremme K. Primary habitual abor- tions are as sociated with high frequency of factory leiden mutation [ J ]. Fertil Steril, 2000,74(5 ) : 987-991.
6Swingle HM,Colaizy TT, Zimmerman MB , et al. Abortion and therisk of subsequent preterm birth : a systematic review with meta - an-alyses[ J]. J Reprod Med, 2009,54(2) : 95 - 108.
7Wramsby WL,Sten LS,Bremme K.Primary habitual abortions are as sociated with high frequency of facbory leiden mulation[J].Fetil steril,2000,74(5):987-991.
