Assistant Professor, MD, PhD Iryna Dudchenko, hematologist of University Clinic SSU from 4 to 6 May 2021 has successfully attended the Columbia University OMInar in Internal Medicine, organized by Open Medical Institute and its partner institutions, Columbia University (USA) and the Medical University of Innsbruck (Austria). Topical issues of hematology, nephrology and interventional cardiology were considered during the seminar.