TY  - RPRT
TI  - [COPD-nonpharmacological treatment].
AU  - Michael Pfeifer
PY  - 2006
DO  - 10.1007/s00063-006-1037-5
UR  - https://pubmed.ncbi.nlm.nih.gov/16607485/
ID  - 16607485
ER  -