CHANGES OF THE HEART VALVES IN THE LONG TERM AFTER CHEMORADIOTHERAPY ACCORDING TO DIFFERENT PROTOCOLS FOR HODGKIN'S LYMPHOMA IN CHILDREN AND ADOLESCENTS Статья Parkhomenko R.A., Shcherbenko O.I., Rybakova M.K., Zelinskaya N.I., Kharchenko N.V., Kunda M.A., Zapirov G.M. Journal of Adolescent and Young Adult Oncology. Mary Ann Liebert Inc.. Том 8. 2019. С. 410-416