Virologic versus cytologic triage of women with equivocal Pap smears: a meta-analysis of the accuracy to detect high-grade intraepithelial neoplasia., Arbyn, M., Buntinx Frank, Van Ranst Marc, Paraskevaidis Evangelos, Martin-Hirsch Pierre, and Dillner Joakim , J Natl Cancer Inst, 2004 Feb 18, Volume 96, Issue 4, p.280-93, (2004)