1. Centre for Conflict & Health Research, King’s College London , London WC2R 2LS, UK
2. Academic Department of Military Nursing, Research and Clinical Innovation Hub, ICT Centre , Birmingham B15 2TT, UK
3. Department of Midwifery and Child Health, University of Hull , Hull HU6 7RX, UK
4. Medical Operational Support Group, 2 Medical Brigade , Strensall, York YO32 5SW, UK