TY  - RPRT
TI  - Postural variation in second sound splitting.
AU  - J C MacKenzie
AU  - M E Rosenberg
AU  - G Kroll
AU  - M Brandfonbrener
PY  - 1973
DO  - 10.1378/chest.63.1.56
UR  - https://pubmed.ncbi.nlm.nih.gov/4684114/
ID  - 4684114
ER  -