SUTHAR, N. N. .; PATEL, K. L. .; SHAH, J. . A Study on Awareness of Chronic Obstructive Pulmonary Disease (COPD) Among Smokers. National Journal of Community Medicine, [S. l.], v. 6, n. 04, p. 547–553, 2015. Disponível em: https://njcmindia.com/index.php/file/article/view/1275. Acesso em: 23 nov. 2024.