human papillomavirus
(2002): “Type specific persistence of high risk human papillomavirus (HPV) as indicator of high grade cervical squamous intraepithelial lesions in young women: population based prospective follow up study”.
( 2002 ) : “Type specific persistence of high risk human papillomavirus ( HPV ) as indicator of high grade cervical squamous intraepithelial lesions in young women : population based prospective follow up study” .