Published on in Vol 3 , No 1 (2020) :Jan-Dec
Preprints (earlier versions) of this paper are available at https://preprints.jmir.org/preprint/20282, first published .
1 Institute for Health Research, University of Bedfordshire, Luton, GB
2 School of Health and Social Work, University of Hull, Hull, GB
3 Centre for Health Services Research, City, University of London, London, GB
4 see Acknowledgments, Eindhoven, NL