Kostrova, G. N.
Malyavskaya, S. I.
Lebedev, A. V.
Article History
Received: 15 July 2020
Revised: 30 October 2020
Accepted: 4 November 2020
First Online: 16 December 2021
COMPLIANCE WITH ETHICAL STANDARDS
: All procedures performed in studies involving human participants were in accordance with the ethical standards of the 1964 Helsinki Declaration and its later amendments and were approved by the local Ethics Committee at the Northern State Medical University (Arkhangelsk; Minutes no. 04/01-16 dated February 3, 2016). All individual participants involved in the study voluntarily provided informed consent for participation after being informed about the potential risks and benefits and nature of the study.
: Each study participant provided a voluntary written informed consent, signed by him after explaining the potential risks and benefits, as well as the nature of the upcoming study.
: The authors declare that they have no real or potential conflictS of interest.