Lapeña, José Florencio F. “Medicine and Manipulation: Aspiration and Ambition”. Philippine Journal of Otolaryngology Head and Neck Surgery 23, no. 2 (December 27, 2008): 4. Accessed May 2, 2024. https://pjohns.pso-hns.org/index.php/pjohns/article/view/723.