Bermisheva, M. A.
Gilyazova, I. R.
Zinnatullina, G. F.
Khusnutdinova, E. K.
Article History
Received: 16 May 2019
Revised: 28 June 2019
Accepted: 24 July 2019
First Online: 30 May 2020
COMPLIANCE WITH ETHICAL STANDARDS
: <i>Conflict of interest.</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 performed in a study involving people comply with the ethical standards of the institutional and/or national committee for research ethics and the 1964 Helsinki Declaration and its subsequent changes or comparable ethical standards. Informed consent from each of the participants in the studywas obtained.