title: Lengthening the chain of survival.
authors.forename: M
authors.initials: M
authors.lastname: Kuisma
mesh_terms: D015897:Comorbidity; D004632:Emergency Medical Services; D006323:Heart Arrest / Q000401:mortality / Q000628:therapy*; D006801:Humans; D015994:Incidence; D015996:Survival Rate; D014693:Ventricular Fibrillation / Q000453:epidemiology