[Variations of systolic murmur in children with mitral valve insufficiency].

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@article{Varik1967VariationsOS, title={[Variations of systolic murmur in children with mitral valve insufficiency].}, author={N P Varik and A. I. Pimenov}, journal={Voprosy okhrany materinstva i detstva}, year={1967}, volume={12 3}, pages={37-41} }