text_1: Primary cervical cytology screening with HPV detection has higher longitudinal sensitivity to detect severe cervical intraepithelial neoplasia than conventional cytology.
text_2: METHODS Between March, 2004, and December, 2004, in two separate recruitment phases, women aged 25-60 years were randomly assigned to conventional cytology or to HPV testing in combination with liquid-based cytology (first phase) or alone (second phase).