RT Journal Article SR Electronic T1 HPV in cervix and vagina JF Sexually Transmitted Infections JO Sex Transm Infect FD BMJ Publishing Group Ltd SP 249 OP 250 DO 10.1136/sti.2003.008383 VO 80 IS 3 A1 M Baay A1 F Lardon A1 J B Vermorken A1 V Verhoeven A1 D Avonts A1 P Van Royen A1 K Wouters A1 P Van Damme A1 E Van Marck YR 2004 UL http://sti.bmj.com/content/80/3/249.2.abstract AB