i would like to say a big thank you to leonid sergeyevich leskov, an oncologist who works at the branch of the a.s. loginov MCSC dzm tsaop. Thanks from me and all my relatives for the support, sensitive and attentive attitude. It is a great happiness and rarity in our time that doctors with talent work exactly where they are most needed. Always polite, attentive, his visit brought peace and hope. I bow low to you, Leonid Sergeevich.