Article History
Received: 20 June 2021
Accepted: 4 November 2021
First Online: 15 November 2021
Declarations
:
: Participation was voluntary. All study participants provided written informed consent. Ethical approval was obtained from the Ethics Committee of Rīga Stradiņš University (No. 40/26.10.2017).
: Not applicable.
: The authors have no competing interests to declare.