Chetambath, R., Kathim, R.A. and Ibrahim, R. 2023. Alpha-1-antitrypsin level as a predictor of acute exacerbations in chronic obstructive pulmonary disease: a prospective observational study. International Journal of Research in Medical Sciences. 12, 1 (Dec. 2023), 124–128. DOI:https://doi.org/10.18203/2320-6012.ijrms20233986.