1Wramsby ML, Sten LS, Bremme K. Primary habitual abortions are ass-iated with high frequency of factory Leiden mutation[J]. Fertil Steril, 2000,74(5 ) : 987-991.
2Coticchio G,Sereni E,Serrao L,et al. What criteria for the definition of oocyte quality?[J]. An N Y Acad Sci,2004,1034:132-144.