Estimates and determinants of HPV non-vaccination and vaccine refusal in girls 12 to 14 y of age in Canada: Results from the Childhood National Immunization Coverage Survey, 2013  N.L. Gilbert et al., Human Vaccines & Immunotherapeutics, June 2016

Improving human papillomavirus vaccine delivery: A national study of parents and their adolescent sons  P.L. Reiter et al., Journal of Adolescent Health, July 2013

Provider recommendation mediates the relationship between parental human papillomavirus (HPV) vaccine awareness and HPV vaccine initiation and completion among 13- to 17-year-old U.S. adolescent children  M. Rahman et al., Clinical Pediatrics, April 2015

A qualitative study to assess school nurses' views on vaccinating 12- to 13-year-old school girls against human papillomavirus without parental consent  R. Stretch et al., BMC Public Health, July 2009

Recommended childhood and adolescent immunization schedules—United States, 2011  Policy statement by the Committee on Infectious Diseases, Pediatrics, February 2011

School-based HPV immunization of young adolescents: Effects of two brief health interventions  V.I. Rickert et al., Human Vaccines & Immunotherapeutics, February 2015

Teens and tweens find they too need vaccines to attend school  N. Shute, Shots: Health News from NPR, September 19, 2011

Vaccination: An opportunity to enhance early adolescent preventative services  R. Rupp et al., Journal of Adolescent Health, October 2006