P117 Increasing use of intraosseous access at out-of-hospital cardiac arrest: a registry-based cohort study. (June 2022) - Vadeyar, Sharvari; Buckle, Alexandra; Hooper, Amy; Booth, Scott; Deakin, Charles; Fothergill, Rachael; Ji, Chen; Nolan, Jerry; Perkins, Gavin D; Couper, Keith; ,