. 2011 Sep 29;13(3):e76. doi: 10.2196/jmir.1707
©Marleen H. van den Berg, Annelies Overbeek, Helena J. van der Pal, A. Birgitta Versluys, Dorine Bresters, Flora E. van Leeuwen, Cornelis B. Lambalk, Gertjan J.L. Kaspers, Eline van Dulmen-den Broeder. Originally published in the Journal of Medical Internet Research (http://www.jmir.org), 29.09.2011.
This is an open-access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work, first published in the Journal of Medical Internet Research, is properly cited. The complete bibliographic information, a link to the original publication on http://www.jmir.org/, as well as this copyright and license information must be included.
Figure 1.
Flow diagram of participants.