Niemelä, Jarmo
Kallio, Raija
Ohtonen, Pasi
Saarnio, Juha
Syrjälä, Hannu
Funding for this research was provided by:
University of Oulu including Oulu University Hospital
Article History
Received: 19 May 2022
Accepted: 28 February 2023
First Online: 27 March 2023
Declarations
:
: The study protocol was approved by The Ethics Committee of Human Sciences of the University of Oulu. Informed consent was waived by The Ethics Committee of Human Sciences of University of Oulu because the study was register-based and does not require informed consent. All methods were carried out in accordance with relevant guidelines and regulations.
: Not applicable.
: The authors have no conflicts of interest. The authors had full control of all primary data and agree to allow the journal to review their data if requested.