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Article History

Received: 9 May 2021

Accepted: 16 September 2021

First Online: 29 September 2021

Declarations

:

: The study was approved by the Regional Committee for Medical and Health Research Ethics (2018/954 REC west, Norway). Passive informed consent was obtained from all living patients included in the study. A letter informing about the study was sent to all living patients who had underwent MH surgery at Stavanger University Hospital from 2008 to 2018. Patients who wished to decline participation, could contact us by letter, e-mail, SMS or phone. The regional ethic committee approved this method of consent. All data were anonymised before use.

: Not applicable.

: None of the authors have any conflicting interests to disclose.