Wahyono TY, Mahkota R, Nurcandra F, Ansariadi A, Hidajah AC, Helda H, et al. Seroepidemiological investigation of SARS-CoV-2 infection and risk factors in Indonesia before mass COVID-19 vaccination. Narra J [Internet]. 2025 Mar. 24 [cited 2026 Apr. 2];5(1):e1957. Available from: https://www.narraj.org/main/article/view/1957