TY  - RPRT
TI  - Preventing postoperative pulmonary complications.
AU  - O U Petring
AU  - B Adelhøj
PY  - 1985
DO  - 10.1016/s0140-6736(85)92064-1
UR  - https://pubmed.ncbi.nlm.nih.gov/2857298/
ID  - 2857298
ER  -