Prevalence of parents’ non-intention to vaccinate their children and adolescents against COVID-19: a comparative analysis in Colombia and Peru. SciELO Preprints, 2022. DOI: 10.1590/SciELOPreprints.3499. Disponível em: https://preprints.scielo.org/index.php/scielo/preprint/view/3499. Acesso em: 4 ago. 2026.