Wart virus vaccine female 6 human 6 adult 5 Female 4 Humans 4 Papillomavirus Vaccines 4 Adult 3 Article 3 Papillomavirus Infections 3 Uterine Cervical Neoplasms 3 major clinical study 3 papillomavirus infection 3 uterine cervix tumor 3 vaccination 3 Adolescent 2 Caucasian 2 HPV vaccination 2 Patient Acceptance of Health Care 2 United States 2 Vaccination 2 Young Adult 2 adolescent 2 attitude to health 2 cancer prevention 2 controlled study 2 drug efficacy 2 drug safety 2 follow up 2 health care personnel 2