Plumo, Claudette Gloria, and Emmanuel Tadeus Cruz. “Association Between E-Cigarette Vaping, Voice Quality and Vocal Cord Integrity Among Patients at the Quezon City General Hospital”. Philippine Journal of Otolaryngology Head and Neck Surgery 40, no. 2 (November 7, 2025): 14. Accessed August 19, 2026. https://pjohns.pso-hns.org/index.php/pjohns/article/view/2355.