SULEMAN, A.; ULLAH, R.; NISAR, H.; NAZ, S.; KHAN, R. N. Prevalence of Influenza vaccination in Chronic Obstructive pulmonary disease patients. Pakistan Journal of Chest Medicine, [S. l.], v. 24, n. 2, p. 86–90, 2018. Disponível em: https://pjcm.net/index.php/pjcm/article/view/519. Acesso em: 19 apr. 2026.