Berezina, Alla L.
Monastyrska, Tetiana O.
Molebny, Oleh A.
Fikssen, Vladislav N.
Rud, Alexander D.
Kotko, Andrii V.
Article History
Received: 30 November 2019
Accepted: 25 February 2020
First Online: 12 March 2020
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.