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Authors
Høydahl, Øystein
Edna, Tom-Harald
Xanthoulis, Athanasios
Lydersen, Stian
Endreseth, Birger Henning
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Funding
Funding for this research was provided by:
NTNU Norwegian University of Science and Technology
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Article History
Received: 1 July 2022
Accepted: 5 September 2022
First Online: 12 September 2022
Change Date: 19 January 2023
Change Type: Update
Change Details: Missing Open Access funding information has been added in the Funding Note.
Declarations
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: The project was performed in accordance with the Declaration of Helsinki. The Regional Committee for Medical and Health Research Ethics (REC) in Norway approved the study (2016/2172/REK midt). Written informed consent was waived due to the retrospective observational nature of the study. All treatment was given according to local guidelines from 1980-1992, and according to similar, national guidelines from 1993-2016.
: Not applicable.
: The authors declare no competing interests.
