SOMNATH V. Early detection of chronic obstructive pulmonary disease in asymptomatic smokers using spirometry – a hospital based study. International Journal of Allied Medical Sciences and Clinical Research, [S. l.], v. 6, n. 3, p. 518–523, 2020. DOI: 10.61096/ijamscr.v6.iss3.2018.518-523. Disponível em: https://ijamscr.com/ijamscr/article/view/544. Acesso em: 22 jul. 2024.