ENDOTHELIN-1 AS A PROGNOSTIC MARKER FOR THE DEVELOPMENT OF SOCIALLY SIGNIFICANT DISEASES IN PEDIATRICS (LITERATURE REVIEW) endothelium, endothelial dysfunction, endothelin-1, prognostic marker, socially significant diseases, children, adolescents Е. Ponomarenko , Т. Khomyakova , V. Mkhitarov , Yu. Khomyakov https://doi.org/10.54890/1694-6405_2023_5_121