Human Papillomavirus (HPV) Vaccination Among Survivors of Childhood Cancer

This study will focus on the primary objectives: * To estimate the prevalence of HPV vaccination among a large cohort of childhood cancer survivors and an acquaintance control group. * To describe the difference in HPV vaccination rate and HPV vaccination intent among preadolescent/adolescent females surviving childhood cancer and an acquaintance control group. This study will also focus on the secondary objectives: * To examine sociodemographic, medical, and psychological differences between those who have/have not initiated HPV vaccination and between those who do/do not intend to get vaccinated in the future. * To assess the general predictive influence of sociodemographic, medical, and psychological variables on HPV vaccination and intent among mothers with preadolescent/adolescent daughters.