VELIKOV, P. et al. SARS-CoV-2 infection in children and young people in Bulgaria – a prospective, single-center, cohort study. Acta Medica Bulgarica, Sofia, Bulgaria, v. 50, n. 2, p. 10–19, 2023. DOI: 10.2478/AMB-2023-0014. Disponível em: https://journals.mu-sofia.bg/index.php/amb/article/view/2.. Acesso em: 4 jul. 2024.