SREEKUMAR, A.; KIRAN KUMAR. Using a peak flow meter to assess severity of exacerbation in patients suffering from chronic obstructive pulmonary disease: a prospective observational study. International Journal of Research in Medical Sciences, [S. l.], v. 11, n. 5, p. 1526–1530, 2023. DOI: 10.18203/2320-6012.ijrms20231036. Disponível em: https://www.msjonline.org/index.php/ijrms/article/view/11920. Acesso em: 14 oct. 2025.