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. 2015 Feb 11;15(2):4097–4133. doi: 10.3390/s150204097

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© 2015 by the authors; licensee MDPI, Basel, Switzerland.

This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution license (http://creativecommons.org/licenses/by/4.0/).

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Figure 2. — Sensor-based support on formative assessment.