2Grime DA. The morbidity and mortality of pregnancy: still risk business[J]. AM J Obstet Gyneeol, 1994, 170:1489.
3Barnhart K, Esposito M, Coutifaris C. An update on the medical treatment of ectopic pregnancy. Obstet Gynecol[J]. Clin North Am, 2000, 27:653-667.
4James WH.A hypothesis on the increasing rates of ectopic pregnancy paediatr perinat[J].Epicemilol,1989,3(2):189
5Parazzini F,Tozzo L, Ferraroni M, et al.Risk factors for ectopic pregnancy: an Italian case control study. Obstet Gynecol,1992; 80:821～826
6Catherine, Tharaux-Deneux, MD, et al. Risk of eetopic pregnancy and previous induced abortion. Am J Pulic Health,1998;88(3):401～405
7Michalas S, Minaretzis D, Tsionou CH, et al. Previous surgery, Reproduction factors and risk of eetopic pregnancy: a ease controlled study. Int J Gynecol Obstet,1992;38:101～105
8Farley TMM, Rosenkerg MI, Rowe PJ, et al. Intrauterine devices and pelvic inflammatory disease: An international perspeetion. Lancent,1992;339(8796):785～788
9Nordens Kjo1d F, Ahlgren M. Risk factor in ectopic pregnancy. Results from a population-based case-control study. Acta obstet Gynecol Stand,1991;70:575～579
10Mona Saraiya MD. Cigarette smoking as a risk factor for ectopie pregnancy. Am J Obstet Gyneeol,1998; 178:493～497
