About the Authors
- Trisha Greenhalgh
- Healthcare Innovation and Policy Unit, Centre for Health Sciences, Barts and The London School of Medicine and Dentistry, London, United Kingdom
- Jill Russell
- Division of Medical Education, University College London, London, United Kingdom
The authors have declared that no competing interests exist.
ICMJE criteria for authorship read and met: TG JR. Agree with the manuscript's results and conclusions: TG JR. Wrote the first draft of the paper: TG. Contributed to the writing of the paper: TG JR.