title: Supplementation should be included in the first step in the current chain of survival.
authors.forename: Saehwan
authors.initials: S
authors.lastname: Park
authors.forename: Sung Pil
authors.initials: SP
authors.lastname: Chung
authors.forename: Je Sung
authors.initials: JS
authors.lastname: You
mesh_terms: D004632:Emergency Medical Services / Q000458:organization & administration*; D006323:Heart Arrest / Q000175:diagnosis / Q000401:mortality* / Q000628:therapy*; D006801:Humans; D012151:Resuscitation; D015996:Survival Rate