- Correspondence to Karl Charlton, Research Paramedic, North East Ambulance Service NHS Foundation Trust, Newcastle upon Tyne NE15 8NY, UK;
- Received March 4, 2019
- Revised July 5, 2019
- Accepted July 8, 2019
- First published August 19, 2019.
If you wish to reuse any or all of this article please use the link below which will take you to the Copyright Clearance Center’s RightsLink service. You will be able to get a quick price and instant permission to reuse the content in many different ways.