Johansson, Katarina
Mustonen, Harri
Seppänen, Hanna
Lehtimäki, Tiina E.
Funding for this research was provided by:
Helsinki University Library
Wilhelm och Else Stockmanns Stiftelse
Kurt och Doris Palanders stiftelse
the Finnish State Subsidy Fund
the Sigrid Jusélius Foundation
Article History
Received: 7 May 2022
Accepted: 3 August 2022
First Online: 21 August 2022
Declarations
:
: This study was registered with and approved by the Surgical Research Committee of Helsinki University Central Hospital (HUS/333/2019, extended HUS/155/2021) and by the Diagnostic Research Committee of Helsinki University Central Hospital (HUS/211/2020). All methods were carried out in accordance with the Declaration of Helsinki. We were not obligated to secure written informed consent from patients because of the retrospective nature of this study and based on the Act on the Secondary Use of Health and Social data (552/2019).
: Because of the retrospective nature of this study and the Act on the Secondary Use of Health and Social data (552/2019), the written informed consent of the patients was not demanded and it was waived by IRB approval.
: The authors declare that they have no competing interests.