An observational study comparing HPV prevalence and type distribution between HPV-vaccinated and -unvaccinated girls after introduction of school-based HPV vaccination in Norway

一项观察性研究比较了挪威在学校推行HPV疫苗接种后，接种过HPV疫苗的女孩和未接种过HPV疫苗的女孩中HPV的患病率和类型分布。