Preobrazhensky, Petr Mikhailovich http://orcid.org/0000-0002-9569-1566
Bozhkova, Svetlana Anatolievna
Kazemirsky, Alexander Viktorovich
Tikhilov, Rashid Murtazalievich
Kulaba, Taras Andreevich
Kornilov, Nikolai Nikolaevich
Article History
Received: 24 September 2018
Accepted: 8 January 2019
First Online: 16 January 2019
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.
: All procedures performed in the study 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.