Nugraha, J., Permatasari, C. A. . and Fitriah, M. (2022) “Durability of S-RBD IgG Antibody Levels after Sinovac Vaccination in Healthcare Workers”, Folia Medica Indonesiana, 58(3), pp. 234–241. doi: 10.20473/fmi.v58i3.35873.