The Significance of Observation as Indicators of Similarity in the Case of Acute Lower Respiratory Illnesses in Children. Indo-American Journal of Life Sciences and Biotechnology, [S. l.], v. 20, n. 2, p. 19–28, 2023. Disponível em: https://iajlb.org/index.php/iajlb/article/view/137. Acesso em: 7 mar. 2026.