Pizarras, S. J. (2021) “Clinical Characteristics and Outcomes of COVID-19 Patients with Gastrointestinal Manifestations Seen in a Tertiary Hospital: A Retrospectve, Cohort Study”, Philippine Journal of Gastroenterology, 10(2). Available at: https://philjgastro.com/index.php/pjg/article/view/20 (Accessed: 24 September 2026).