TY  - RPRT
TI  - Chronic oxygen therapy.
AU  - M R Flick
AU  - A J Block
PY  - 1977
DO  - 10.1016/s0025-7125(16)31268-8
UR  - https://pubmed.ncbi.nlm.nih.gov/412017/
ID  - 412017
ER  -