Nelveg-Kristensen, Karl Emil
Laier, Gunnar Hellmund
Heaf, James Goya
Article History
Received: 26 June 2018
Accepted: 7 December 2018
First Online: 20 December 2018
Ethics approval and consent to participate
: Retrospective, register-basted studies of anonymized data do not require ethical approval in Denmark. The current study was approved by the Danish Data Protection agency (Reg-84-2015) and the Danish Patient Safety Authority (No. 3–3013-1329/1). Consent to participate was not required in the current study. This was waivered by the Danish Data Protection Agency, as data was collected retrospectively by use of the Danish nationwide registries for scientific epidemiological research only, and as the collection of informed consent in this setting was impossible.
: Not applicable.
: The authors declare that they have no competing interests.
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