Sound level and frequency field of the 1st heart sound during various contractility conditions of the myocardium
Aigner, A.; Knapp, E.; Müller, G.; Raas, E.; Baumgartl, P.; Glettner, M.
Zeitschrift für Kardiologie 63(10): 896-904
1974
ISSN/ISBN: 0300-5860 PMID: 4440203 Document Number: 81656
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