“…This edition of Trauma Surgery & Acute Care Open contains an article by Mitra et al , which describes a 5-year, retrospective, registry-based cohort study of transfusion practices in an Australian trauma center. 1 The aim of the study was to evaluate the association of two ‘modifiable risk factors’—the time to blood component transfusion, and the volume of blood components transfused—with hospital mortality.…”