1. Centre for Research in Medical and Dental Education; University of Birmingham; UK
2. National Health Service; West Midlands; UK
3. School of Education; University of Birmingham; UK
4. Department of Public Health, Epidemiology, and Biostatistics; University of Birmingham; UK
5. Centre for Research in Medical and Dental Education; University of Birmingham; School of Education; Durham University; UK
6. School of Education; Durham University; Leazes Road Durham DH1 1TA UK