Funding for this research was provided by:
Javna Agencija za Raziskovalno Dejavnost RS (J2-8172, P2-0228)
Received: 12 February 2020
Accepted: 23 June 2020
First Online: 2 July 2020
Ethics approval and consent to participate
: The study was approved by the Republic of Slovenia National Ethics Committee, decision number 80/03/15. All participants gave written informed consent.
: Not applicable.
: The authors declare that they have no competing interests.