. 2020 Jul 5;9(7):e17939. doi: 10.2196/17939
©Jonathan Hill, Stefannie Garvin, Ying Chen, Vincent Cooper, Simon Wathall, Bernadette Bartlam, Benjamin Saunders, Martyn Lewis, Joanne Protheroe, Adrian Chudyk, Hollie Birkinshaw, Kate M Dunn, Sue Jowett, Raymond Oppong, Elaine Hay, Danielle van der Windt, Christian Mallen, Nadine E Foster. Originally published in JMIR Research Protocols (http://www.researchprotocols.org), 05.07.2020.
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 JMIR Research Protocols, is properly cited. The complete bibliographic information, a link to the original publication on http://www.researchprotocols.org, as well as this copyright and license information must be included.