Affiliation: | 1. Social Care Workforce Research Unit, King's College London, London, UK;2. Health Services Research, University of Liverpool, Liverpool, UK;3. National Addiction Centre, Institute of Psychiatry, King's College London, London, UK;4. Clinical Trials and Health Research, University of Plymouth, Plymouth, UK;5. Pathway, University College Hospital Homeless Team, London, UK;6. The London School of Economics & Political Science, London, UK;7. Public Health Informatics, University College London, London, UK |