TY - JOUR T1 - Helicopter and ground emergency medical services transportation to hospital after major trauma in England: a comparative cohort study JO - Trauma Surgery & Acute Care Open PY - 2020/07/16 AU - Beaumont O AU - Lecky F AU - Bouamra O AU - Surendra Kumar D AU - Coats T AU - Lockey D AU - Willett K ED - DO - DOI: 10.1136/tsaco-2020-000508 PB - BMJ VL - 5 IS - 1 Y2 - 2024/10/19 ER -