Kuitunen, Ilari http://orcid.org/0000-0001-8178-9610
Ponkilainen, Ville T.
Launonen, Antti P.
Reito, Aleksi
Hevonkorpi, Teemu P.
Paloneva, Juha
Mattila, Ville M.
Article History
Received: 17 August 2020
Accepted: 24 November 2020
First Online: 4 December 2020
Ethics approval and consent to participate
: This study has the research permission from each of the participating hospitals. No ethical approval was needed, due the retrospective register-based design and the subjects were not contacted.
: Not applicable.
: The authors declare that they have no competing interests.