. 2009 May 11;11(2):e15. doi: 10.2196/jmir.1151
© Björn Meyer, Thomas Berger, Franz Caspar, Christopher G Beevers, Gerhard Andersson, Mario Weiss. Originally published in the Journal of Medical Internet Research (http://www.jmir.org), 11.05.2009.
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Figure 2.
Participant flow