TY  - RPRT
TI  - Collateral ventilation demonstrated by helium transfer.
AU  - D H Baker
AU  - W J Daly
PY  - 1969
DO  - 10.1152/jappl.1969.26.3.321
UR  - https://pubmed.ncbi.nlm.nih.gov/5773174/
ID  - 5773174
ER  -