Definitions of duration of type-specific hr-HPV detection.

*only women positive for hr-HPV at sample month 12 are included in the 2nd study year and in the analysis of HPV persistency.仅将采样第12个月时高危型人乳头瘤病毒（hr-HPV）检测呈阳性的女性，纳入本研究第2年的研究队列及HPV持续感染情况的分析。