Long-term antibody-response monitoring following primary exposure to SARS-COV-2 and afterward mRNA COVID-19 vaccination: A case report - Balint, Bela; Todorović Balint, Milena; Andrić, Zorana; Jovičić, Milica; Blagojević , Glorija; Čolić, Miodrag (Vojnosanitetski pregled, 2021)