6Dart R, Raznanujam P, Dart L. Progesterone as a Predictor of ectopic pregnancy when the ultrasound is indeterminate [ J ]. Am J Emerg Med, 2002, 20 (7): 575-579.
7Condous G, Kirk E, Lu C, et al. There is no role for uterine curet - rage in the contemporary diagnosticworkup of womenwith a pregnan - cy of unknown location [ J ]. Human Reproduction, 2006, 21 (10) : 2706 - 2710.
8Lipscomb GH. Medical therapy for ectopic pregnancy [J] . Semin Reprod Med, 2007, 25 (2): 93-98.
