Funding for this research was provided by:
Strategic Research Council of the Academy of Finland (312703)
Received: 7 February 2020
Accepted: 18 November 2020
First Online: 4 December 2020
Ethics approval and consent to participate
: The use of the data in this research was approved by the Ethics Committee of the North Savo Hospital District. The approval for data use was achieved from Siun sote administering the patient registers. This was a register-based study and consent from the patients is not needed.
: Not applicable.
: The authors declare that they have no competing interests.