Lapeña, Jose Florencio. “COVID-19 and Climate Change: Signing Up for Our Impossible Dream”. Philippine Journal of Otolaryngology Head and Neck Surgery 36, no. 2 (November 11, 2021): 4. Accessed April 24, 2024. https://pjohns.pso-hns.org/index.php/pjohns/article/view/1787.