HPV 16 and HPV 18 are estimated to be responsible for approximately 70% of cervical cancers; 80% of adenocarcinoma in situ (AIS); 45-70% of high-grade cervical intraepithelial neoplasia (CIN 2/ 3); 25% of low grade cervical intraepithelial neoplasia (CIN 1); approximately 70% of HPV related high- grade vulvar (VIN 2/ 3) and vaginal (VaIN 2/ 3) intraepithelial neoplasia.