Article History
Received: 16 May 2019
Accepted: 24 October 2019
First Online: 11 November 2019
Ethics approval
: This study was approved by the National Medical Ethics Committee at Ministry of Health, Republic of Slovenia, 5 Štefanova Street, 1000 Ljubljana, Slovenia, Europe, under reference number: 0120–8/2017–3, KME 21/01/17-bis. Written informed consent was obtained from all study participants.
: Not applicable.
: The authors declare that they have no competing interest.