. 2017 Nov 28;6(11):e239. doi: 10.2196/resprot.8365
©Judith G Huis in het Veld, Bernadette M Willemse, Iris FM van Asch, Rob BM Groot Zwaaftink, Paul-Jeroen Verkade, Nienke J Veldhuijzen, Renate Verkaik, Marco M Blom, Anneke L Francke. Originally published in JMIR Research Protocols (http://www.researchprotocols.org), 28.11.2017.
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Figure 1.
Study flow chart.