Budiyono, J., B. Murti, and D. G. Tamtomo. “Effectiveness of COVID-19 Vaccine on Augmenting Antibody Level in People in the Special Region of Yogyakarta, Indonesia”. Journal of Epidemiology and Public Health, vol. 9, no. 1, Jan. 2024, pp. 37-46, doi:10.26911/jepublichealth.2024.09.01.04.