1)Huh WK, et al : Final efficacy, immunogenicity, and safety analyses of a nine-valent human papillomavirus vaccine in women aged 16-26 years : a randomised, double-blind trial. Lancet 390 : 2143-2159, 2017
2)Giuliano AR, et al : Nine-valent HPV vaccine efficacy against related diseases and definitive therapy : comparison with historic placebo population. Gynecol Oncol 154 : 110-117, 2019
3)Kjaer SK, et al : Long-term effectiveness of the nine-valent human papillomavirus vaccine in Scandinavian women : interim analysis after 8 years of follow-up. Hum vaccin Immunother 17 : 943-949, 2021
4)Restrepo J, et al : Ten-year follow-up of 9-valent human papillomavirus vaccine : immunogenicity, effectiveness, and safety. Pediatrics 152 : e2022060993, 2023
5)Iversen OE, et al : Immunogenicity of the 9-valent HPV vaccine using 2-dose regimens in girls and boys vs a 3-dose regimen in women. JAMA 316 : 2411-2421, 2016
6)Garland SM, et al : Efficacy, immunogenicity, and safety of a 9-valent human papillomavirus vaccine : subgroup analysis of participants from Asian countries. J Infect Dis 218 : 95-108, 2018
7)Iwata S, et al : Safety and immunogenicity of a 9-valent human papillomavirus vaccine administered to 9- to 15-year-old Japanese girls. Jpn J Infect Dis 70 : 368-373, 2017
8)de Sanjosé S, et al : Burden of human papillomavirus(HPV)-related cancers attributable to HPVs 6/11/16/18/31/33/45/52 and 58. JNCI Cancer Spectr 2 : pky045, 2018
9)Onuki M, et al : Human papillomavirus genotype contribution to cervical cancer and precancer : implications for screening and vaccination in Japan. Cancer Sci 111 : 2546-2557, 2020