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. 2020 Jul 8;10(7):e038133. doi: 10.1136/bmjopen-2020-038133

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© Author(s) (or their employer(s)) 2020. Re-use permitted under CC BY-NC. No commercial re-use. See rights and permissions. Published by BMJ.

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All patients included in the registry. Left axis and bars: number of out-of-hospital cardiac arrests treated by ambulance, by year of registration. Patients with EMS-observed collapse are identified as light grey. Right axis and lines: population incidence of ambulance treated arrests (blue), and population incidence of 30-day survival (green); per 100 000 inhabitants. EMS, emergency medical service.