© Astrid Torbjørnsen, Milada Cvancarova Småstuen, Anne Karen Jenum, Eirik Årsand, Lis Ribu. Originally published in JMIR Mhealth and Uhealth (http://mhealth.jmir.org), 21.05.2018. 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 JMIR mhealth and uhealth, is properly cited.
Except where otherwise noted, this item's license is described as © Astrid Torbjørnsen, Milada Cvancarova Småstuen, Anne Karen Jenum, Eirik Årsand, Lis Ribu. Originally published in JMIR Mhealth and Uhealth (http://mhealth.jmir.org), 21.05.2018. 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 JMIR mhealth and uhealth, is properly cited.