TY  - RPRT
TI  - Preoxygenation: best method for both efficacy and efficiency.
AU  - J L Benumof
PY  - 1999
DO  - 10.1097/00000542-199909000-00006
UR  - https://pubmed.ncbi.nlm.nih.gov/10485765/
ID  - 10485765
ER  -