1Ankum WM Van der Veen F, Hamrlynck JVThH, Lammes FB. Laparoscopy:a dispensable tool in the diagnosis of ectopie preganaoy[J], Hum Reprod, 1993,8 : 1301 - 1306
2Clarisa B, Gracla MD, Hillary A, et al. Prophylactic methotrexate after linear salpingostomy : a decision analysis[ J ]. Fertil Steril, 2001,76: 1191 - 1195