Steinvik, Tine
Raatiniemi, Lasse
Mogensen, Brynjólfur
Steingrímsdóttir, Guðrún B.
Beer, Torfinn
Eriksson, Anders
Dehli, Trond
Wisborg, Torben
Bakke, Håkon Kvåle
Article History
Received: 22 September 2021
Accepted: 2 December 2021
First Online: 11 January 2022
Declarations
:
: According to Swedish law, register studies of deceased individuals do not require ethical approval. The study was approved by ethics committees in each of the other countries: Regional Ethics Committee, Finland (98/2013); The National Bioethics Committee, Vísindasiðanefnd, Iceland (VSNb201410013/03.11); The Norwegian Ethics Board (REK) (No. 2013/1470/REK Nord); and Patient Data Security Officer at University Hospital of Northern Norway (2014/0418). Consent to participate was not applicable.
: Not applicable.
: None of the authors have any conflicts of interest to declare.