. 2019 Jan 13;7(1):82–87. doi: 10.3889/oamjms.2019.023
Copyright: © 2019 Bekzhan Alipbayevich Orazbayev, Kani Musulmanbekov, Akat Bukenov.
This is an open-access article distributed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (CC BY-NC 4.0).