Roberts I, Shakur H, Ker K, Coats T; Colaboradores do ensaio CRASH-2. Cochrane Database Syst Rev. 2011 Jan 19;(1):CD004896.
Cochrane Injuries Group, London School of Hygiene & Tropical Medicine, North Courtyard, Keppel Street, Londres, Reino Unido, WC1E 7HT.