3Dart RG, Mitterando J, Dart LM. Rate of change of serial beta-human chorionic gonadotropin values as a predictor of ectopic pregnancy in patients with indeterminate transvaginal ultrasound findings. Ann Emerg Med, 1999, 34(6): 703-710.
4郑均美.现代妇产科[M].上海:上海医科大学出版社,1998.153.
5Marill KA, Ingmire TE, Nelson BK. Utility of single beta hCG measurement to evaluate for absence of ectopic pregnancy [J]. J Emerg Med, 1999, 17: 419-26.
6Natale A, Candiani M, Merlo D, et al. Human chorionic gonadotropin level as a predictor of trophoblastic infiltration into the tubal wall in ectopic pregnancy: a blinded study[J]. Fertil Steril, 2003, 79: 981-6.
7Mehta TS. Treatment of ectopic pregnancy: is a human chorionic gonadotropin levels of 2000 mIU/mL a reasonable threshold [J]?Radiolaoy, 1997, 205: 569.
