TY  - RPRT
TI  - Chronic obstructive pulmonary disease.
AU  - Huib Kerstjens
AU  - Dirkje Postma
AU  - Nick Ten Hacken
PY  - 2004
UR  - https://pubmed.ncbi.nlm.nih.gov/15652094/
ID  - 15652094
ER  -