@misc{indiciae6e1c9cbfe1f2, title = {Exacerbations: etiology and pathophysiologic mechanisms.}, author = {Jadwiga A Wedzicha}, year = {2002}, doi = {10.1378/chest.121.5\_suppl.136s}, url = {https://pubmed.ncbi.nlm.nih.gov/12010842/}, note = {Source identifier: 12010842} }