Kekki, Maiju http://orcid.org/0000-0002-3316-7021
Koukkula, Topias
Salonen, Anne http://orcid.org/0000-0003-3454-2003
Gissler, Mika http://orcid.org/0000-0001-8254-7525
Laivuori, Hannele http://orcid.org/0000-0003-3212-7826
Huttunen, Tuomas T. http://orcid.org/0000-0001-7884-7533
Tihtonen, Kati http://orcid.org/0000-0003-3217-979X
Funding for this research was provided by:
The competitive State Research Financing of the Expert Responsibility area of Tampere University Hospital (9AB026)
Article History
Received: 8 March 2022
Accepted: 25 August 2022
First Online: 8 September 2022
Declarations
:
: The authors declare that they have no conflict of interest.
: This study was approved by the Ethics committee of Tampere University Hospital (reference number R17069). Institutional approval was also obtained from the Finnish Institute for Health and Welfare (reference number THL/1659/5.05.00/2017).
: In accordance with Finnish regulations, and due to the retrospective register-based study design, no informed written consent was required. Only pseudonymized data were used.