Naqeeb Ullah, Muhammad Hanif, Dost Muhammad Khan, Najam ud Din, Habibullah, Ikram Ullah, Jamshed Khan 2023. Comparison of Mean duration of Hospital Stay in COPD patients with Acute Exacerbations Treated with and without Prophylactic Azithromycin. Pakistan Journal of Medical & Health Sciences. 17, 10 (Oct. 2023), 412. DOI:https://doi.org/10.53350/pjmhs20231710412.