Budiyono, Joko, Bhisma Murti, and Didik Gunawan Tamtomo. 2024. “Effectiveness of COVID-19 Vaccine on Augmenting Antibody Level in People in the Special Region of Yogyakarta, Indonesia”. Journal of Epidemiology and Public Health 9 (1):37-46. https://doi.org/10.26911/jepublichealth.2024.09.01.04.