Kosturkova, Mariya Blagoeva http://orcid.org/0000-0003-0161-3493
Mihaylova, Galya Mihaylova http://orcid.org/0000-0002-7587-7291
Shivacheva, Tanya Kirilova http://orcid.org/0000-0001-7789-4100
Radanova, Maria Atanasova http://orcid.org/0000-0002-0941-6139
Article History
Received: 26 October 2021
Accepted: 31 December 2021
First Online: 13 January 2022
Declarations
:
: We wish to confirm that there are no known conflicts of interest associated with this publication and there has been no significant financial support for this work that could have influenced its outcome.
: We confirm that any aspect of the work covered in this manuscript that has involved human patients has been conducted with the ethical approval of all relevant bodies and that such approvals are acknowledged within the manuscript.
: IRB approval was obtained with an approval number No. 73/29.03.2018 and each participant signed an informed consent form on enrollment.