Received: 3 November 2021
Accepted: 4 November 2021
First Online: 28 January 2022
: The study was approved by the Ethical Board of Clinical Centre of Serbia (Permission No: 692/10 from May 17, 2018). Informed consent was taken from all employees who participated in the interview with strict respect for privacy and confidentiality.
: Not applicable.
: The authors declare that they have no competing interests.