| sustained antibody responses 6 years following 1, 2, or 3 doses of quadrivalent human papillomavirus (hpv) vaccine in adolescent fijian girls, and subsequent responses to a single dose of bivalent hpv vaccine: a prospective cohort study. | the duration of antibody response following reduced human papillomavirus (hpv) vaccine doses has not been determined. we compared the antibody responses in girls previously vaccinated with zero, 1, 2, or 3 doses of quadrivalent hpv vaccine (4vhpv; gardasil, merck) 6 years previously. | 2017 | 28034886 |