Clinical, radiological and laboratory characteristics in children diagnosed with COVID-19: Meta-analysis of a single proportion. SciELO Preprints, 2020. DOI: 10.1590/SciELOPreprints.278. Disponível em: https://preprints.scielo.org/index.php/scielo/preprint/view/278. Acesso em: 6 nov. 2026.