Isayev, A. I.
Mammadova, H. I.
Mekhtiyeva, S. I.
Alekberov, R. I.
Article History
Received: 1 June 2020
Revised: 8 June 2020
Accepted: 8 June 2020
First Online: 9 October 2020
CONFLICT OF INTEREST
: The authors declare that they have no conflict of interest.