Received: 30 March 2020
Accepted: 16 December 2020
First Online: 6 January 2021
Change Date: 10 April 2021
Change Type: Update
Change Details: The paper was amended to add the OA funding note.
Ethics approval and consent to participate
: This study was performed according to the Helsinki declaration and approved by the Ethics Research Committee in Uppsala, Sweden (registration number 2018/165, date of issue 6 Mai 2018). Informed consent was waived because of the register-based design of this study, which did not involve any additional risk for patients. The raw data were provided by the SPOQ after approval of the ethics review committee and an approved application for registry data from quality registries for research purposes.
: Not applicable.
: We have no competing interest to declare.