[1] London Borough Islington, London, England
[2] Natl Inst Hlth & Care Res Clin Res Network NIHR CR, Cornwall Council, London, England
[3] Teesside Univ, Natl Inst Hlth & Care Res, South Tees, LCRN North East & North Cumbria, Middlesbrough, England
[4] London Borough Tower Hamlets, London, England
[5] UCL, Populat Hlth Sci, London, England