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Pibarot, P., Durand, L.G., Langlois, Y.E. et al. Effects of altering heart rate and P-R interval on closure sounds produced by a bioprosthetic heart valve in a dog. Med. Biol. Eng. Comput. 31, 78–81 (1993). https://doi.org/10.1007/BF02446899
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DOI: https://doi.org/10.1007/BF02446899