Varg, Sofi
Vicente, Veronica
Castren, Maaret
Lindgren, Peter
Rehnberg, Clas
Article History
Received: 10 June 2020
Accepted: 16 October 2020
First Online: 30 October 2020
Ethics approval and consent to participate
: Ethics approval was granted by the Regional Ethical Review Board in Stockholm (reference number 2016/2373–31/5). Informed consent for this register-based follow-up study was waived by the ethics committee. Administrative permission to use the data was granted by the Healthcare Committee Department at Region Stockholm, the Ambulance Medical Service in Stockholm and the Swedish Association of Local Authorities and Regions.
: Not applicable.
: SV is employed by a research and development unit at Region Stockholm, and CR is partly contracted by the same organisation. VV is head of research and development department of the ambulance service in Stockholm. The organisations had no part in the design, results or conclusions of the study. For the remaining authors no competing interests were declared.