O’Leary, S., Lockhart, S., Barnard, J., Furniss, A., Dickinson, M., Dempsey, A., … Kempe, A. (2018). Exploring Facilitators and Barriers to Initiation and Completion of the Human Papillomavirus (HPV) Vaccine Series among Parents of Girls in a Safety Net System. International Journal of Environmental Research and Public Health, 15(2). https://doi.org/10.3390/ijerph15020185 (Original work published 2018)