Head and Neck Surg, Philipp J Otolaryngol. “Contents Vol. 31 No. 1 January – June 2016”. Philippine Journal of Otolaryngology Head and Neck Surgery 31, no. 1 (May 26, 2020): 3. Accessed May 6, 2024. https://pjohns.pso-hns.org/index.php/pjohns/article/view/1349.