Tsareva, E. Yu.
Favorova, O. O.
Boyko, A. N.
Kulakova, O. G.
Article History
Received: 11 March 2019
Revised: 18 March 2019
Accepted: 18 March 2019
First Online: 19 August 2019
COMPLIANCE WITH ETHICAL STANDARDS
: <i>Conflict of interests.</i> The authors declare that they have no conflict of interest.
: <i>Statement of compliance with standards of research involving humans as subjects.</i> All procedures used in this work were in accordance with the ethical standards of the Institutional Ethics Committee and the 1964 Declaration of Helsinki and its later amendments or comparable ethical standards.