4Feng ZC, Shi YP,Wu XZ, et al. The application of hysteroscopy in diagnosis and treatment of missing intra -uterine devices[ J]. Gynaecological Endoscopy ,2001, 10:61 - 63.
5Feng ZC, Shi YP,Wu XZ, et al. The application of hysteroscopy in diagnosis and treatment of missing intra -uterine devices[ J]. Gynaecological Endoscopy ,2001, 10:61 - 63.