Detak jantung: Perbedaan antara revisi

{{listen|filename=Infant Heartbeat.ogg |title=Detak jantung janin |description=Detak jantung pada janin}}

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|40–60

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== Pranala luar ==

* [http://www.med.umich.edu/lrc/coursepages/M1/anatomy/html/surface/thorax/hsounds.html Diagram at umich.edu, with associated sounds]