Received: 12 August 2019
Accepted: 23 December 2019
First Online: 3 January 2020
Ethics approval and consent to participate
: The study protocol was approved by the institutional review board of the Pirkanmaa Health District (R17156, November 7th, 2017). The study was retrospective and based on registry data only, with no interventions or patient contact involved. Thus, the need for patient consent was waived.
: Not applicable.
: The authors declare that they have no competing interests.