Targeted temperature management guided by the severity of hyperlactatemia for out-of-hospital cardiac arrest patients: a post hoc analysis of a nationwide, multicenter prospective registry - Okazaki, T; Hifumi, T; Kawakita, K; Kuroda, Y; Japanese Association for Acute Medicine out-of-hospital cardiac arrest (JAAM-OHCA) registry (Ann Intensive Care, 2019)