Nguyen, V. T., M. Endo, S. . Ihara, A. . Kato, S. . Sakamoto, T. . Tanaka, and Y. . Tanaka. “The HPV Vaccine Crisis in Japan”. Journal of Asian Medical Students’ Association, vol. 9, Jan. 2021, p. 3, https://jamsa.amsa-international.org/index.php/main/article/view/222.