Madrid, J., P. Agarwal, K. Müller-Peltzer, L. Benning, M. Selig, P. Diehl, J. Kalbhenn, G. Trummer, S. Utzolino, T. Wengenmayer, H. Jörg Busch, D. Stolz, S. Rieg, M. Panning, C. L. Schlett, F. Bamberg, and E. Askani. “COVID-19 vaccination is associated with lower mortality and intensive care unit admission among hospitalized patients with COVID-19: A retrospective cohort study”. Chulalongkorn Medical Journal, Aug. 2026, https://he05.tci-thaijo.org/index.php/CMJ/article/view/8256.