TY  - RPRT
TI  - Why act early in COPD?
AU  - G J Wesseling
AU  - C P van Schayck
PY  - 2006
DO  - 10.4081/monaldi.2006.561
UR  - https://pubmed.ncbi.nlm.nih.gov/17220105/
ID  - 17220105
ER  -