Kaurkin, S. N.
Skvortsov, D. V.
Ivanova, G. E.
Article History
Received: 29 May 2019
Revised: 10 July 2019
Accepted: 12 October 2019
First Online: 13 May 2020
COMPLIANCE WITH ETHICAL STANDARDS
: The study was approved by the Local Ethics Committee of Pirogov Russian National Research Medical University (no. 123 dated 21.01.2013). Each subject signed a written informed consent after all potential risks and benefits, as well as the nature of the study had been explained to them.
: The authors declare that there are no clear and potential conflicts of interest related to the publication of this article.
: Each participant in the study submitted a voluntary written informed consent, signed by him after explaining to him the potential risks and benefits, as well as the nature of the forthcoming study.
: The text was submitted by the authors in English.