© Heidi Holmen, Kirsti Riiser, Anette Winger. Originally published in the Journal of Medical Internet Research (http://www.jmir.org), 28.02.2020. This is an open-access article distributed under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0/), 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.
Except where otherwise noted, this item's license is described as © Heidi Holmen, Kirsti Riiser, Anette Winger. Originally published in the Journal of Medical Internet Research (http://www.jmir.org), 28.02.2020. This is an open-access article distributed under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0/), 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.