1. UKRAINIAN MILITARY MEDICAL ACADEMY, KYIV, UKRAINE
2. NATIONAL MILITARY MEDICAL CLINICAL CENTER “MAIN MILITARY CLINICAL HOSPITAL”, KYIV, UKRAINE
3. STATE INSTITUTION “O.M. MARZIEIEV INSTITUTE FOR PUBLIC HEALTH” NAMSU, KYIV, UKRAINE
4. BOGOMOLETS NATIONAL MEDICAL UNIVERSITY, KYIV, UKRAINE