. 2015 Mar 10;4(1):e33. doi: 10.2196/resprot.4034
©Jose Antonio Merchán-Baeza, Manuel Gonzalez-Sanchez, Antonio Cuesta-Vargas. Originally published in JMIR Research Protocols (http://www.researchprotocols.org), 10.03.2015.
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Figure 1.
Screenshot of the app isoTimer.