TY  - RPRT
TI  - Chronic obstructive pulmonary disease--can we do better?
AU  - T L Petty
PY  - 1990
DO  - 10.1378/chest.97.2.2s
UR  - https://pubmed.ncbi.nlm.nih.gov/2404709/
ID  - 2404709
ER  -