Vonnavic L. Racuya and Daune Alden F. Oandasan 2021. The Predisposing, Precipitating, Perpetuating and Protective (4Ps) Factors of Sexually Transmitted Infection in the Young: A Single Case Study. The Vector: International Journal of Emerging Science, Technology and Management (IJESTM). 30, 1 (Dec. 2021). DOI:https://doi.org/10.69566/ijestm.v30i1.73.