Pivina, Lyudmila
Semenova, Yuliya
Doşa, Monica Daniela
Dauletyarova, Marzhan
Bjørklund, Geir http://orcid.org/0000-0003-2632-3935
Article History
Received: 29 November 2018
Accepted: 7 February 2019
First Online: 18 February 2019
Compliance with Ethical Standards
:
: The authors declare that they have no conflict of interest.