Fig. 1From: Significant decline of HPV 6 infection and genital warts despite low HPV vaccination coverage in young women in Germany: a long-term prospective, cohort data analysisTimeline for recuitment and analysis of particpants in the study. Cohort 1 = born 1983/84 analyzed in 2009/10; cohort 2 = born in 1988/89 analyzed in 2009/10; cohort 3 = born 1988/89 analyzed in 2014/15; cohort 4 = born 1993/94 analyzed in 2014/15Back to article page