Funding for this research was provided by:
Received: 17 November 2020
Accepted: 16 February 2021
First Online: 2 March 2021
Ethics approval and consent to participate
: The study was approved by the Regional Ethics Review Board, Stockholm, Sweden (diary number K 2018–6018). Informed consents were given from the patients. None of the patients were dead when included for registration in the SRIE, hence no written informed consent from the legally authorized representatives/next of kin of patients were obtained. Data obtained from the SRIE were anonymized and did not include any personal data.
: Not applicable.
: The authors declare that they have no competing interests.