Affiliation: | 1. Centre for Medical Education, School of Medicine, Cardiff University, Cardiff, UK;2. Departments of Social Statistics (School of Social Science) and Education (School of Environment Education and Development), The University of Manchester, Manchester, UK;3. Division of Population Health, Health Services Research and Primary Care, The University of Manchester, Manchester, UK;4. Division of Cancer & Genetics, School of Medicine, Cardiff University, Cardiff, UK |