Todorov, Petar T. http://orcid.org/0000-0002-8050-0149
Peneva, Petia N.
Georgieva, Stela I.
Tchekalarova, Jana
Vitkova, Victoria
Antonova, Krassimira
Georgiev, Anton
Funding for this research was provided by:
Bulgarian National Science Fund (project ДH 18/5)
Article History
Received: 7 November 2018
Accepted: 20 December 2018
First Online: 2 January 2019
Compliance with ethical standards
:
: The authors declare that they have no conflict of interests.
: All procedures were performed in agreement with the European Communities Council Directive 2010/63/EU. The experimental design was approved by the Institutional Ethics Committee. There were no human participants.