TY  - RPRT
TI  - Screening and early intervention for COPD.
AU  - G T Ferguson
AU  - T L Petty
PY  - 1998
DO  - 10.3810/hp.1998.04.89
UR  - https://pubmed.ncbi.nlm.nih.gov/9562834/
ID  - 9562834
ER  -