Vanhala, Antero
Lehto, Anna-Rosa
Maksimow, Anu
Torkki, Paulus
Kivivuori, Sanna-Maria
Article History
Received: 1 March 2022
Accepted: 23 May 2022
First Online: 21 June 2022
Declarations
:
: The study was reviewed and approved by the Research Administration of the Helsinki and Uusimaa Hospital District (Research Director resolution, 20 February 2020). The HUS Helsinki University Hospital Ethics Committee gave exemption for ethics committee approval and informed consent to participate due to national legislation that does not require ethics committee approval for an administrative document study without patient intervention, human participants, tissue samples, or patient data, in accordance with the Medical Research Act of Finland. Access to information systems was in accordance with General Data Protection Regulation article 9.2.j. All methods were carried out in accordance with relevant guidelines and regulations.
: Not applicable.
: The authors declare that they have no competing interests.