TY  - RPRT
TI  - Passive expiration as a test of lung function.
AU  - K Ashutosh
AU  - J F Keighley
PY  - 1978
DO  - 10.1136/thx.33.6.740
UR  - https://pubmed.ncbi.nlm.nih.gov/371059/
ID  - 371059
ER  -