TY  - RPRT
TI  - Oxygen is cost effective.
AU  - S B Groudine
AU  - J Singh
PY  - 1995
DO  - 10.1097/00000539-199510000-00057
UR  - https://pubmed.ncbi.nlm.nih.gov/7574041/
ID  - 7574041
ER  -