TY  - RPRT
TI  - [Two simple methods in preoperative functional analysis. Ergospirometry using Douglas' bag and Arnaud's bronchus blockade].
AU  - L Kühner
PY  - 1972
DO  - 10.1007/bf02100542
UR  - https://pubmed.ncbi.nlm.nih.gov/4641506/
ID  - 4641506
ER  -