Footnotes
Contributors: All the authors participated in designing the study and
interpreting the data. All the authors critically revised the
manuscript. All authors were involved in the development of the
protocol, validated topic guide, and interpretation of the analysis. ES
conducted the focus groups, transcribed and analysed the qualitative
data and wrote the first draft of the manuscript. The corresponding
author attests that all listed authors meet authorship criteria and no
other meeting criteria have been omitted.
Transparency declaration: The lead author, Eleanor Sein, affirms that
the manuscript is an honest, accurate, and transparent account of the
study being reported; that no important aspects of the study have been
omitted; and that any discrepancies from the study as planned have been
explained.
Funding: no external funding
Competing interests: All authors have completed the ICMJE uniform
disclosure form at
www.icmje.org/coi_disclosure.pdf
and declare: no support from any organisation for the submitted
work, all authors are affiliated with Imperial College London
as educators; no other relationships or activities that could appear to
have influenced the submitted work.
Provenance and peer review: Not commissioned; externally peer reviewed