Khan, Tahir, Nafid ullah Khan, Qaiser Iqbal Khan, Raza muhammad Khan, Atif Masood, and Wali Khan. 2022. “Frequency of Acute Exacerbation of COPD Among Non-Smokers in Tertiary Care Hospital of Bannu KPK-Pakistan”. Journal of Women Medical and Dental College 1 (2). https://doi.org/10.56600/jwmdc.v1i2.17.