Puspalina, Ferda, et al. “Comparison of SARS-CoV2 IgG Antibody Levels in Health Workers With and Without a History of COVID-19 Infection After Heterologous Vaccination at Dr. Mohammad Hoesin General Hospital, Palembang, Indonesia”. Bioscientia Medicina : Journal of Biomedicine and Translational Research, vol. 6, no. 16, Jan. 2023, pp. 2866-70, https://doi.org/10.37275/bsm.v6i16.713.