 
			
					ISSN Print 2500–1094   
					ISSN Online 2542–1204				
				
				
				BIOMEDICAL JOURNAL OF PIROGOV UNIVERSITY (MOSCOW, RUSSIA)
			 
			Pirogov Russian National Research Medical University, Moscow, Russia
Correspondence should be addressed: Tatiana A. Gaydina
 Ostrovityanova, 1, Moscow, 117997; ur.xednay@924cod
Author contribution: Gaydina TA — surgery; literature analysis; data acquisition, analysis and interpretation; manuscript preparation; Dvornikov AS — literature analysis; data acquisition, analysis and interpretation; Skripkina PA — manuscript preparation.