BRINKHOF, M.; BIRRER, A.; HAGMAN, R. Influenza-attribuable mortality among the elderly in Switzerland. Swiss Medical Weekly, [S. l.], v. 136, n. 1920, p. 302–302, 2006. DOI: 10.4414/smw.2006.11373. Disponível em: https://smw.ch/index.php/smw/article/view/603. Acesso em: 23 apr. 2024.