1.
Suthar NN, Patel KL, Shah J. A Study on Awareness of Chronic Obstructive Pulmonary Disease (COPD) Among Smokers. Natl J Community Med [Internet]. 2015 Dec. 31 [cited 2024 May 6];6(04):547-53. Available from: https://njcmindia.com/index.php/file/article/view/1275