Lapeña, José Florencio F. “The Physician’s Pledge: Promises at Dawn, Passages in Darkness”. Philippine Journal of Otolaryngology Head and Neck Surgery 31, no. 2 (November 30, 2016): 4–5. Accessed March 28, 2024. https://pjohns.pso-hns.org/index.php/pjohns/article/view/213.