. 2012 Apr 26;1(1):e2. doi: 10.2196/resprot.1791
©Linda Bolier, Merel Haverman, Jeannet Kramer, Brigitte Boon, Filip Smit, Heleen Riper, Ernst Bohlmeijer. Originally published in JMIR Research Protocols (http://www.researchprotocols.org), 26.04.2012.
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