Author contribution: Shereshneva MV - review of actual Russian and foreign literature related to the examined issue, identification of the study subject, determination of the goal and objectives, laboratory examination of induced blood oxidation values, mathematical and statistical data processing, making conclusions; Ilyin MV - development of study program, formulation of the study subject, determination of goal and objectives, mathematical and statistical data processing, making conclusions.

Compliance with ethical standards: the study underwent ethical expertise and was approved by the Ethics Committee of the Yaroslavl State Medical University of the Ministry of Health of Russia. Prior to inclusion, the patients were explained the study goals and objectives in detail, and a voluntary informed consent was obtained.