. 2015 Nov 24;4(4):e21. doi: 10.2196/ijmr.4245
©Martine WJ Huygens, Joan Vermeulen, Roland D Friele, Onno CP van Schayck, Judith D de Jong, Luc P de Witte. Originally published in the Interactive Journal of Medical Research (http://www.i-jmr.org/), 24.11.2015.
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Figure 1.
Flowchart of participants included in the study. GP: general practitioner.