[Genesis of the pre-systolic murmur in extrasystole].
Bittencourt LA, Maciel RE, Schellini FA, Curti HJ, Sanches PC, Nogueira EA, Jorge PA, de Paiva CE, Carvalhal Sdos S.
Bittencourt LA, et al. Among authors: maciel re.
Arq Bras Cardiol. 1980 Sep;35(3):211-7.
Arq Bras Cardiol. 1980.
PMID: 6163420
Portuguese.
No abstract available.