Gunin, A. G.
Golubtsova, N. N.
Subbotkina, N. O.
Subbotkin, A. S.
Article History
First Online: 16 April 2019
COMPLIANCE WITH ETHICAL STANDARDS
: <i>Conflict of interests</i>. The authors declare that they have no conflict of interest.
: <i>Statement on the welfare of animals</i>. All applicable international, national, and/or institutional guidelines for the care and use of animals were followed. The study was approved by the Ethics Committee at the Faculty of Medicine (Ulyanov Chuvash State University).