Recruitment for this study has ended.
NIHR acknowledgement and disclaimer statement:
This Programme is funded by the National Institute for Health and Care Research (NIHR) under its Programme Grants for Applied Research Programme (Grant Reference number NIHR201076). The views expressed are those of the author(s) and not necessarily those of the NIHR or the Department of Health and Social Care.
CareCoach, NCTU, Norwich Medical School, University of East Anglia, Earlham Road, Norwich, NR4 7TL.