. 2017 Feb 1;19(2):e31. doi: 10.2196/jmir.7005
©Johan N Siebert, Frederic Ehrler, Christophe Combescure, Laurence Lacroix, Kevin Haddad, Oliver Sanchez, Alain Gervaix, Christian Lovis, Sergio Manzano. Originally published in the Journal of Medical Internet Research (http://www.jmir.org), 01.02.2017.
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Figure 1.
Study design: A two-period, randomized controlled, two-arm crossover study.