Aleksova, Michaella
Kenarova, Anelia
Boteva, Silvena https://orcid.org/0000-0002-3928-7489
Georgieva, Stela
Chanev, Christo
Radeva, Galina
Funding for this research was provided by:
National Research Fund (DN 11/6 - Dec, 2017)
Article History
Received: 3 January 2021
Revised: 16 May 2021
Accepted: 2 June 2021
First Online: 12 June 2021
Declarations
:
: The authors have no relevant financial or non-financial interests to disclose. The authors have no conflicts of interest to declare that are relevant to the content of this article. All authors certify that they have no affiliations with or involvement in any organization or entity with any financial interest or non-financial interest in the subject matter or materials discussed in this manuscript. The authors have no financial or proprietary interests in any material discussed in this article. In the research were not involved humans and/or animals.
: The manuscript is not submitted to other journals for simultaneous consideration. The submitted work is original and has not been published elsewhere in any form or language.
: All procedures performed in the study do not involve animals. All procedures performed in the study do not involve human participants.
: All procedures performed in the study do not involve humans and/or animals.