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. 2016 May 25;18(5):e100. doi: 10.2196/jmir.5145

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©María Ángeles Piñero-López, Pilar Modamio, Cecilia F Lastra, Eduardo L Mariño. Originally published in the Journal of Medical Internet Research (http://www.jmir.org), 25.05.2016.

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.

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Evolution of the medians by year of SMOG grade, Flesch-Kincaid grade level, Szigriszt's perspicuity index, and length for the package leaflet sections. Section 1: what X is and what it is used for; section 2: what you need to know before you take (or use) X; section 3: how to take (or use) X; section 4: possible side effects; section 5: how to store X; and annex.