TY  - RPRT
TI  - Toward a consensus definition for COPD exacerbations.
AU  - R Rodriguez-Roisin
PY  - 2000
DO  - 10.1378/chest.117.5_suppl_2.398s
UR  - https://pubmed.ncbi.nlm.nih.gov/10843984/
ID  - 10843984
ER  -