Velikov P, Kapincheva N, Trifonova I, Velev V, Popov M, Ivanov I, et al. SARS-CoV-2 infection in children and young people in Bulgaria – a prospective, single-center, cohort study. AMB [Internet]. 2023 Jun. 30 [cited 2024 Nov. 24];50(2):10-9. Available from: https://journals.mu-sofia.bg/index.php/amb/article/view/2