1 ﹒ Kirk E,Papageorghiou AT,Condous G,et al . The diagnostic effectiveness of aninitial transvaginal scanin detecting ectopic pregnancy . Hum Reprod,2007,283 ∶ 1‐.9 ﹒许华,朱瑾.异位妊娠的诊治进展.现代妇产科进展,2006,15.HPL and LIF for differentiating bet ween ectopic and abno ......