Borzunov, Dmitry Y.
Shastov, Alexander L.
Article History
Received: 10 November 2017
Accepted: 12 June 2018
First Online: 23 June 2018
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.
: All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards.
: For this type of study formal consent is not required.