Ganchev, Ivo
Dzhelebov, Georgi
Article History
Received: 27 September 2022
Revised: 13 February 2023
Accepted: 15 February 2023
First Online: 3 April 2023
COMPLIANCE WITH ETHICAL STANDARDS
: Conflict of interest. The authors declare that they have no conflicts of interest.
: Statement of compliance with standards of research involving humans as subjects. All applicable international, national, and/or institutional guidelines were followed.