TY  - GEN
AU  - MICHELAZZI,A M
AU  - TRIVELLA,U
AU  - TRIVELLA,P
TI  - [The effort phonocardiogram in the normal subject]
SN  - 0081-069X
PY  - 1998///1101
KW  - Phonocardiography
N1  - Publication Type: Journal Article
ER  -