5Hammond AO, Hammoud I, Bujold E, et al. The role of sonographic endometrial patterns and endometrial thickness in the differential diagnosis of ectopic pregnancy. Am J Obstet Gynecol, 2005,192: 1370-1375.
6Bamhart KT, C, Ashby R, et al. The medicine management of ectopic pregnancy a meta-analysis comparing "single dose" and multidose regimens. Obstet Gynecol,2003,101:778-784.
5SINDOSM, TOQIA A, SERQENTANIS TN, et al. Ruptured ectopic pregnancy:risk factors for a life threateningcondition [ J:. Arch Gynecol Obstet,2009,279 (5) :621-623.