Dokuzova, Iva http://orcid.org/0000-0002-9099-6969
Razpopov, Dimitar
Article History
Received: 27 August 2019
Revised: 6 December 2019
First Online: 23 January 2020
Compliance with ethical standards
:
: On behalf of all authors, the corresponding author states that there is no conflict of interest.