Received: 21 July 2020
Accepted: 20 October 2020
First Online: 30 October 2020
Ethics approval and consent to participate
: The study was approved by the Regional Research Ethics Committee of Gothenburg, Sweden, on April 6, 2017 (Approval number 223-17). Patient consent was waived due to the retrospective nature of the analysis based on existing data.
: Not applicable
: All authors declare that they have no conflicts of interest.