Yahya, D.
Miteva, V.
Micheva, I.
Ruseva, T.
Angelova, L.
Article History
Received: 18 December 2021
Revised: 18 December 2022
Accepted: 18 May 2023
First Online: 18 June 2023
COMPLIANCE WITH ETHICAL STANDARDS
: <i>Conflict of interest</i>. The authors declare that they have no conflicts of interest.
: <i>Statement of compliance with standards of research involving humans as subjects</i>. This a retrospective study and as such does not require approval by the ethical committee. Still, informed consent is obtained from all individual participants included in the study since it is a part of the routine administration in the University hospital.