2020, Vol. 55, Issue 4, December By Oksana BOYARCHUK, Larysa KOSTYUCHENKO, Alla VOLOKHA, Anastasia BONDARENKO, Anna HILFANOVA, Yaryna BOYKO, Mariya KINASH, Tetyana HARIYAN, Yuriy STEPANOVSKYY, Luibov VOLYANSKA and Liudmyla CHERNYSHOVAClinical and immunological presentation of ataxia-telangiectasia …