Turan, Atakan, Hamdi Öğüt, Aylin Ayyıldız Varol, Nizameddin Koca, and Hayri Bozkurt. “Comparing the Effectiveness of Different Vaccination Regimens Using Sinovac and BNT162b2 Vaccines Among Hospitalised Patients: A Single-Centre Hospital-Based Retrospective Cohort Study”. The European Research Journal 11, no. 6 (November 3, 2025): 1167–1175. Accessed May 22, 2026. https://www.eurj.org.tr/article/view/1094.