Audibility of the fourth heart sound. a prospective, "blind" auscultatory and polygraphic investigation

Rectra, E.H.; Khan, A.H.; Pigott, V.M.; Spodick, D.H.

JAMA 221(1): 36-41

1972


ISSN/ISBN: 0098-7484
PMID: 5067756
Document Number: 47550

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