Epidemiologic classi-fication of human papillomavirus type,associated with cervical canc-er .2 Munoz N,Bosch FX,Silvia de sanjose,et a. N Engl J Med . 2003
Epidemiologic classi-fication of human papillomavirus type,associated with cervical canc-er .2 Munoz N,Bosch FX,Silvia de sanjose,et a. N Engl J Med . 2003