. 2014 Mar 18;16(3):e86. doi: 10.2196/jmir.3069
©Henricus-Paul Cremers, Liesbeth Mercken, Rik Crutzen, Paul Willems, Hein de Vries, Anke Oenema. Originally published in the Journal of Medical Internet Research (http://www.jmir.org), 18.03.2014.
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Figure 1.
‘Fun without Smokes’ website.