PERRONE, Pier Mario et al. Influenza and Covid-19 Vaccination in 2023: a descriptive analysis in two Italian Research and Teaching Hospitals. Is the On-Site strategy effective?. Annali di Igiene Medicina Preventiva e di Comunità, [S. l.], v. 36, n. 4, p. 421–431, 2024. DOI: 10.7416/ai.2024.2606. Disponível em: https://mattioli1885journals.com/index.php/annali-igiene/article/view/17529. Acesso em: 30 jan. 2026.