1. University of Exeter Medical School; Primary Care Research Group; Smeall Building St Luke's Campus Exeter Devon UK EX1 2LU
2. University of Manchester; NIHR School for Primary Care Research, Manchester Academic Health Science Centre, Division of Population Health, Health Services Research and Primary Care; 5th Floor, Williamson Building Oxford Road Manchester UK M13 9PL
3. University of Leeds; Leeds Institute of Health Sciences; Charles Thackrah Building 101 Clarendon Road Leeds UK LS2 9LJ
4. University of Exeter Medical School; Department of General Practice and Primary Care; Smeall Building St Luke's Campus Exeter UK EX1 2LU