Yespembetov, Bolat A.
Syrym, Nazym S.
Zinina, Nadezhda N.
Sarmykova, Makhpal K.
Konbayeva, Gulshat M.
Basybekov, Sovetzhan Z.
Mussayeva, Assiya K.
Kanatbayev, Serik G.
Bazarbayev, Marat
Siyabekov, Sarsenbek T.
Article History
Received: 15 February 2019
Accepted: 16 May 2019
First Online: 8 June 2019
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.