Fenty, F., and I. M. A. Putra. “Antibody Responses to SARS-COV-2 of COVID-19 Patients Based on the Disease Severity”. INDONESIAN JOURNAL OF CLINICAL PATHOLOGY AND MEDICAL LABORATORY, vol. 29, no. 1, Jan. 2023, pp. 43-46, doi:10.24293/ijcpml.v29i1.1951.