TY  - GEN
AU  - Luisada,A A
AU  - Knighten,V
AU  - Rao,D B
TI  - The second heart sound in old age
SN  - 0002-8614
PY  - 1977///0825
KW  - Adult
KW  - Age Factors
KW  - Aged
KW  - Aortic Valve
KW  - Heart Auscultation
KW  - Heart Sounds
KW  - Humans
KW  - Middle Aged
KW  - Phonocardiography
N1  - Publication Type: Journal Article
UR  - https://doi.org/10.1111/j.1532-5415.1977.tb00665.x
ER  -