Received: 17 January 2021
Accepted: 5 April 2021
First Online: 5 May 2021
: This study has been approved by the local institutional review board (2020/21-06). Written informed consent from all participants had been obtained for use of data. Strict adherence to principles announced in the Declaration of Helsinki was provided.
: (2020/21-06). This is attached to the editor in the form of a separate letter
: The authors declare that they have no competing interests.