Stadnyk, V. Yo.
Matviiv, R. B.
Shchepanskyi, P. A.
Rudysh, M. Ya.
Kogut, Z. A.
Article History
Received: 25 June 2019
Revised: 25 June 2019
Accepted: 8 July 2019
First Online: 5 November 2019
CONFLICT OF INTEREST
: The authors declare that they have no conflicts of interest.