SIDDIQUI, A. K.; ZUBAIRI, M.; ALI, A. S.; ZUBAIRI, A. B. S. An Observational Study on Etiology of Non-Resolving Pneumonia in a Tertiary Care Hospital of Karachi, Pakistan. Pakistan Journal of Chest Medicine, [S. l.], v. 28, n. 4, p. 426–432, 2022. DOI: 10.1996/pjcm.v28i4.758. Disponível em: https://www.pjcm.net/index.php/pjcm/article/view/758. Acesso em: 1 nov. 2025.