Revision history of "File:Voice prosthesis wikimedia.jpg"

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  • curprev 14:40, 25 February 2016‎ Haustein talk contribs‎ 203 bytes +203‎ Demonstration about how speech is generated while using a one-way valve with the finger covering the stoma. Image credit: Wikimedia Commons Direct source: https://en.wikipedia.org/wiki/Voice_prosthesis
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