@misc{indiciaedd77ed9c90d0, title = {Chronic obstructive pulmonary disease. Current concepts and therapeutic approaches.}, author = {N J Gross}, year = {1990}, doi = {10.1378/chest.97.2.19s}, url = {https://pubmed.ncbi.nlm.nih.gov/2404708/}, note = {Source identifier: 2404708} }