Sysoev, Kirill
Tadevosyan, Arsen
Samochernykh, Konstantin
Khachatryan, William
Article History
Received: 31 August 2017
Accepted: 16 October 2017
First Online: 24 October 2017
Compliance with ethical standards
:
: Conflict of interest is absent.
: An informed consent was obtained from all individual participants included in the study. All procedures were in accordance with ethical standards of the institutional research committee and with the 1964 Helsinki declaration and its later amendments, or comparable ethical standards.