Triputri, Nency, and Noni Novisari Soeroso. “Charasteristics of COVID-19 Patients Treated At Santa Elisabeth Medan Hospital 2020”. Sumatera Medical Journal 4, no. 1 (January 20, 2021). Accessed September 23, 2025. https://idjpcr.usu.ac.id/smj/article/view/5958.