Influenza vaccination in healthcare personnel – a systematic review. Portuguese Journal of Family Medicine and General Practice, [S. l.], v. 31, n. 1, p. 59–60, 2015. DOI: 10.32385/rpmgf.v31i1.11435. Disponível em: https://rpmgf.pt/ojs/index.php/rpmgf/article/view/11435. Acesso em: 17 apr. 2026.