TY  - RPRT
TI  - Chronic obstructive pulmonary disease.
AU  - Huib Kerstjens
AU  - Dirkje Postma
AU  - Nick ten Hacken
PY  - 2006
UR  - https://pubmed.ncbi.nlm.nih.gov/16973079/
ID  - 16973079
ER  -