TY  - RPRT
TI  - [Greater deterioration of lung function in COPD during continuous than during symptom-oriented bronchodilator treatment].
AU  - B L Maesen
AU  - F P Maesen
PY  - 1993
UR  - https://pubmed.ncbi.nlm.nih.gov/8316313/
ID  - 8316313
ER  -