Footnotes

• Contributors All written by DM and WB.

• Funding The authors have not declared a specific grant for this research from any funding agency in the public, commercial or not-for-profit sectors.

• Competing interests DM is a paid employee of Combat Stress, an honorary member of the King’s Centre for Military Health Research and President Elect of the UK Psychological Trauma Society. WB is a paid employee of Combat Stress.

• Provenance and peer review Commissioned; externally peer reviewed.