6Goldstein SR,Nachtigall M,Snyder JR,et al.Endometrial assessment by vaginal ultrasonography before endometrial sampling in patient with post menopausal bleeding.Am J Obstst Gynecol,1990,163:119
7Emanuel MH, Verdel MJ, Wamsteker K, et al. A prospective comparison of transvaginal ultrasonography and diagnostic hysteroscopy in the evaluation of patients with abnormal uterine bleeding: clinical implication[J]. Am J Obstet Cynecol, 1995, 172: 547 -552.
8Nasri MM, Shepherd JH, Setebell ME, et al. The role of vaginal scan in measurement of endometrial thickness in postmenopausal women [ J ]. Br J Obstet Gynecol, 1991,98 : 470.
9Soares SR, Barbosadas-Rets MM, Camargos AF. Diagnose accuracy of sonohysterography, transvaginal sonography and hysterosalpingography in patients with uterine cavity diseases[J]. Fertil Steril, 2000, 73(2) : 406-411.
10Pasqualotto EB, Margossian H, Price LI, et al. Accuracy of preoperative diagnostic tools and outcome of hysteroscopic management of menstrual dysfunction [ J ]. J Am Assoc Gynecol Laparosc, 2000, 7(2) : 201-209.