Effects of different educational interventions on cervical cancer knowledge and human papillomavirus vaccination uptake among young women in Japan: Preliminary results of a cluster randomized controlled trial - Yuko Takahashi; Yukifumi Sasamori; Risa Higuchi; Asumi Kaku; Tomoo Kumagai; Saya Watanabe; Miki Nishizawa; Kazuki Takasaki; Haruka Nishida; Takayuki Ichinose; Mana Hirano; Yuko Miyagawa; et al. (PLoS ONE)