1. Academic Department of Military Surgery and Trauma, Royal Centre for Defence Medicine, Queen Elizabeth Hospital Birmingham, Birmingham, West Midlands, B152TH, UK
2. Regimental Headquarters, 202 Field Hospital, Birmingham, West Midlands, B146NY, UK
3. Academic Department of Military Anaesthesia and Critical Care, Royal Centre for Defence Medicine, Queen Elizabeth Hospital Birmingham, Birmingham, West Midlands, B152TH, UK
4. US Army Central Command, Shaw Air Force Base, SC 29152, USA