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Article History

Received: 24 February 2021

Accepted: 11 June 2021

First Online: 24 June 2021

Declarations

:

: The Regional Ethical board in Stockholm, Sweden, has approved this study (Approval number: 2017/265–31). With the questionnaire, the participants received written information about the study and were informed that the data would be completely confidential and that they could withdraw from the study at any time without any explanation. A returned questionnaire was considered as consent; no other written informed consent for participation in the study was provided. We confirm that all methods were carried out in accordance with relevant guidelines and regulations.

: Not applicable.

: The authors declare that they have no competing interests.