4Peter SA, Ha HD, George WR. Human papilloma virus in women. A three year experience in a country hospital colpscopy clinic [ J ]. Pepord Med, 1992,37 : 167.
5Ulla H, Astrid KNI, Anne S, et al. Preralence of HPV types 11,16 and 18 in cervical swabs. A study of 1362 pregnancy women [ J ]. Fur Obstet Gynecol Repord Bioll, 1992,35 : 191.
6Woodruff JD, Peterson EF. Condylomata acuminata of the cervix[ J ]. Am Jobstet Gynecol, 1958,75 : 1354 - 1362.
