Abstract
Inter Collegas"Inter Collegas" is an open access journal: all articles are published in open access without an embargo period, under the terms of the CC BY-NC-SA (Creative Commons Attribution ‒ Noncommercial ‒ Share Alike) license; the content is available to all readers without registration from the moment of its publication. Electronic copies of the archive of journals are placed in the repositories of the KhNMU and V.I. Vernadsky National Library of Ukraine.