| population-based human papillomavirus 16,18, 6 and 11 dna positivity and seropositivity in chinese women. | to optimize hpv vaccination implementation at the population-level in china, data are needed on age-specific hpv 16, 18, 6 and 11 prevalence. this cross-sectional, population-based study evaluated the age- and type-specific hpv 16, 18, 6 and 11 prevalence of dna and serum antibodies among women in china. from july 2006 to april 2007, 17 to 54-year-old women from three rural provinces (xinjiang, shanxi, and henan) and two cities (beijing and shanghai) provided cervical exfoliated cells for hpv dn ... | 2011 | 22120998 |