Funding for this research was provided by:
Javna Agencija za Raziskovalno Dejavnost RS (P3-0307)
Received: 9 May 2020
Accepted: 13 August 2020
First Online: 20 August 2020
Ethics approval and consent to participate
: The study protocol was approved by the Republic of Slovenia National Medical Ethics Committee (No. 0120–573/2017/4). All patients gave consent for using their data for study purposes at the start of their treatment. For retrospective studies a written consent is deemed unnecessary according to national regulations.
: The Republic of Slovenia National Medical Ethics Committee approved the study, which was conducted in accordance with the ethical standards laid down in an appropriate version of the 1964 Declaration of Helsinki. The need for consent was waived by the Republic of Slovenia National Medical Ethics Committee.
: The authors declare that they have no competing interests.