4Wamstekerk,Mark HE,De Kruif. Transcervical hyste roscopic resection of sub mucous fiboids for ubnormal uterine bleeding:results regarding the degree of intru mural estension[J].Obstet Gynecol,1993,82:736.
5Neuwirth Rs, Amin HK. Excision of submucous fibroids with hysteroscopic control[J]. Am J obstet Gynecol, 1976, 126: 95-99.