Cite
HARVARD Citation
Harris, C. et al. (1971). "Fixed" splitting of the second heart sound in ventricular septal defect.. Heart. 33 (4), pp. 428-431. [Online].
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Harris, C. et al. (1971). "Fixed" splitting of the second heart sound in ventricular septal defect.. Heart. 33 (4), pp. 428-431. [Online].