TY  - GEN
AU  - Delman,A J
TI  - Aortic ball variance
SN  - 0002-8703
PY  - 1972///0415
KW  - Aortic Valve
KW  - Heart Valve Prosthesis
KW  - standards
KW  - Humans
KW  - Phonocardiography
N1  - Publication Type: Journal Article
UR  - https://doi.org/10.1016/0002-8703(72)90159-7
ER  -