Hanga, Asif Jeelani, Irfan Nazir Mir, Mir Mujtaba Ahmad, Waseem Raja, and Seema Aleem. 2018. “Prevalence of Chronic Obstructive Pulmonary Disease Among Adults in Kashmir (North India): A Population Based Study”. International Journal Of Community Medicine And Public Health 5 (12):5284-89. https://doi.org/10.18203/2394-6040.ijcmph20184804.