1. Research Department of Primary Care and Population Health, University College London, London, UK
2. Division of Medical Sciences and Graduate Entry Medicine, University of Nottingham, Nottingham, UK
3. School of Arts, Sciences and Humanities, University of São Paulo, São Paulo, Brazil
4. Botucatu Medical School, São Paulo State University, São Paulo, Brazil
5. Leicester School of Nursing and Midwifery, Faculty of Health and Life Sciences, De Montfort University, Leicester, UK
6. School of Health Sciences, University of Southampton, Southampton, UK