TY  - RPRT
TI  - Closing volume during normal pregnancy.
AU  - G S Garrard
AU  - W A Littler
AU  - C W Redman
PY  - 1978
DO  - 10.1136/thx.33.4.488
UR  - https://pubmed.ncbi.nlm.nih.gov/694802/
ID  - 694802
ER  -