3Riyazi N,Leeda M,De Vries JI,et al.Low-molecular-weight heparin combined with aspirin in pregnant women with thrombophilia and a history of preeclampsia or fetal growth restriction:a preliminary study[J].Eur J Obstel Gynecol Reprod Biol,1998,80(1):49-54.
4Carlin A J, Farquharson RG Quenby SM, et al. Prospective obwer- vational stedy of bone mineral density during pregnancy :low molec- ular weight heparin versus control. Hum Repro,2004,19 (5) :1211- 1214.
