 In this study, researchers identified a group of people aged between 40 and 50 years old who had signs of chronic obstructive pulmonary disease, copped. These people had lower levels of lung function and more severe symptoms than the general population. The researchers also found that these people had more severe structural changes in their lungs than people who did not have copped. This article was authored by Borgia G. Cosio, Ciro Casanova, Juan Jose Solacataluna, and others.