Acknowledgements: the authors thank Gennady V. Poryadin, Professor at the Department of Pathophysiology and Clinical Pathophysiology (the Faculty of General Medicine, Pirogov Russian National Research Medical University), DMSc and the correspondent member of RAS, for his invaluable critical comments on this paper.

Author contribution: Larina VN conceived and planned the study, analyzed the literature, interpreted the literature data, and revised the manuscript; Golovko MG and Larin VG planned the study, analyzed the literature, interpreted the literature data, and wrote the draft of the manuscript.