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Authors
Simeonova, Denitsa
Stoyanov, Drozdstoy
Leunis, Jean–Claude
Carvalho, Andre F.
Kubera, Marta
Murdjeva, Marianna
Maes, Michael https://orcid.org/0000-0002-2012-871X
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Article History
Received: 29 July 2019
Revised: 28 September 2019
Accepted: 18 October 2019
First Online: 4 December 2019
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.
: All procedures performed in studies involving human participants were in accordance with the ethical standards of the ethical committee of the Medical University of Plovdiv (2/19.04.2018). and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards.
