@article{article452, title = {The Relationship Between Causative Microorganisms and Airway Obstruction in Patients with COPD Exacerbation}, author = {Çakmak, M.E.}, journal = {European Archives of Medical Research}, year = {2019}, volume = {35}, pages = {88-91}, doi = {10.4274/eamr.galenos.2018.34467} }