1Emanuel MH, Verdel MJ, Wamsteker K et al. A prospective comparison of transvaginal ultrasonography and diagnostic hysteroscopy in the e- valuation of patients with abnormal uterine fileeding: clinical implication [J]. Am J Obstet Gynecol, 1995, 172:547.
2Brooks PG, Serden SP. Hysteroscopic finding after unsuccessful dilatation and curettage for abnormal uterine bleeding [J]. Am J Obstet Gynecol , 1988, 158:1354.
3Paschopoulos, Lolis ED, Alamanos Y et al. Vaginoscopic hysteroscopy and transvaginal sonography in the evaluation of patients with abnomal uterine bleeding [J]. J Am Assoc Gynecol Laparosc , 2001, 8 (4) : 506.
4Epstein E, Ramirez A, Skoog L et al. Dilataian and curettage fails to detect most focal lesions in the uterine cavity in women with postmenopausal bleeding [J]. Acta Obstet Gynecol Scand, 2001, 80 ( 12 ) : 1131.