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Abid Usman, Zahoor Ahmed Shah, Saifullah, Lalchand, Inayatullah Awan, Muhammad Firaz Khan 2023. Symptoms and Severity of Depression in Copd Patients. Pakistan Journal of Medical & Health Sciences. 16, 11 (Jan. 2023), 781. DOI:https://doi.org/10.53350/pjmhs20221611781.