4Chen CL, Weiss NS, Newcomb P, et al. Hormone replacement therapy in relation to breast cancer[J]. JAMA,2002,287(6):734-741.
5Belinson JL, Qiao YL, Pretorius RG, et al. Shanxi province Cervical Cancer Screening Study Ⅱ: self-sampiing for high risk human papillomavirus and liquid based cervical cytology[J]. Int J Gynecol Cancer, 2003, 13(6):819-826.
6Bennete BB, Stone IK, Anderson LD et al. Deep loop excision for prehysterctomy endocervical evaluation Am J Obster Gynecol, 1997, 176: 82
7Thomas PA, Zaleski MS , Ohihausen WW. Cytomorphologic characteristics of thermal injury related to endocervical brushing folowing loop electrosurgical excision procedure (LEEP) . Diagn Cytopathol, 1996, 14 (5) : 212