3Iwasawa A, Nieminen P, Lehtinen M, et al. Human papillomavirus in squamous cell carcinoma of the vulva by polymerase chainreaction [J]. Obstet Gynecol, 1997,89(1):841-843.
4Ngan HY, Cheung AN, Liu SS, et al. Abnormal expression or mutation of p53 and HPV in vulvar cancer [J]. Eur J Cancer, 1999,35:481-484.
5Scurry JP, Vanin B. Vulvar squamous cell carcinoma and lichen sclerosus [J]. Aust J Dermatol, 1997,38(1): 20.
6Vilmer C, Cavelier-Balloy B, Nogues C, et al. Analysis of alterations adjacent to invasive vulvar carcinoma and their relationship with the associated carcinoma: a study of 67 cases[J]. Eur J Gynaecol Oncol ,1998,19(1):25-31.