TY  - RPRT
TI  - Pre-oxygenation--how long?
AU  - M Berthoud
AU  - D H Read
AU  - J Norman
PY  - 1983
DO  - 10.1111/j.1365-2044.1983.tb13925.x
UR  - https://pubmed.ncbi.nlm.nih.gov/6402951/
ID  - 6402951
ER  -