Study of Human Papillomavirus Vaccine–Related Social Media Content Across Eight Social Media Platforms: Scoping Review of Communication Content, Information Sources, and Analytical Approaches

Yinghan Xu   ^{1, 2} , MA ;   Ruichen Cong   ² , PhD ;   Mingxin Liu   ³ , MA ;   Siyu Zhou   ^{4, 5} , PhD ;   Masahiko Sakaguchi   ^{6, 7} , PhD ;   Kayoko Katayama   ^{7, 8} , PhD ;   Qun Jin   ² , PhD ;   Shoji Nishimura   ² , PhD ;   Atsushi Ogihara   ² , PhD

¹ Graduate School of Human Sciences, Waseda University, Tokorozawa, Saitama, Japan

² Faculty of Human Sciences, Waseda University, Tokorozawa, Saitama, Japan

³ Department of Health Communication, Graduate School of Medicine, The University of Tokyo, Bunkyo, Tokyo, Japan

⁴ School of Public Health, Hangzhou Normal University, Hangzhou, Zhejiang, China

⁵ Advanced Research Center for Human Sciences, Waseda University, Tokorozawa, Saitama, Japan

⁶ Department of Information Science, Faculty of Science and Technology, Kochi University, Kochi, Japan

⁷ Unit of Cancer Education, Kanagawa Cancer Center Research Institute, Yokohama, Kanagawa, Japan

⁸ Graduate School of Informatics, Gunma University, Maebashi, Gunma, Japan