3Sarig G, Younis JS, Hoffman R et al. Thrombophilia is common in women with idiopathic pregnancy loss and is associated with late pregnancy wastage [J] . Fertil Steril, 2002, 77:342.
4Souza SS, Ferriani RA, Pontes AG et al. Factor V Leiden and factor Ⅱ G20210A mutations in patients with recurrent abortion [ J] . Hum Reprod, 1999, 14:2448.
5Dahlback B, Carlsson M, Svensson PJ. Familiar thrombophilia due to a previously unrecognized mechanism characterized by poor anticoagulant response to activated protein C : prediction of a cofactor to activated protein C [J] . Proc Natl Acad Sci USA, 1993, 90:1004.
6Voelkerding KV. Resistance to activated protein C and a novel factor V gene mutation [J] . Clin Lab Med, 1996, 16:169.
7Grandone E, Margsglione M, Ccolaizzo Dd et al. FactorV Leiden is associated with repeated and recurrent unexplained fetal losses [J] . Thromb Haemost, 1997, 77:822.
8Sottilotta G, Oriana V, Latella C et al. Genetic prothrombotic risk factors in women with unexplained pregnancy loss [J] . Thromb Res, 2006, 117 (6): 681.
9Kazumasa Hashimoto, Yoshie Shizusawa, Koiehiro Shimoya et al. The factor V Leiden mutation in Japanese couples with recurrent spontaneous abortion [J] . Human Reproduction, 1999, 14 (7): 1872.
10Brenner B, Sarig G, Weiner Z et al. Thrombophilic polymorphisms are common in women with fetal loss without apparent cause [ J] . Thromb Haemost, 1999, 82:6.