C. G. Olaes, K. C. Pandiño, M. L. Quintana, K. Corcolon, S. Tokiwa, and S. M. Cipriano, “Underutilization of the Human Papillomavirus Vaccine: Implications for Health Education and Awareness”, jip, vol. 4, no. 4, pp. 292–303, Apr. 2026.