Sutandhio, Silvia, Laura Wihanto, Cecilia Putri Tedyanto, and Sentot Santoso. 2025. “In Vitro Analysis of SARS-CoV-2 Variants That Caused Severe COVID-19 in the Elderly”. Indonesian Journal of Tropical and Infectious Disease 13 (1):10-16. https://doi.org/10.20473/ijtid.v13i1.65484.