1. DANYLO HALYTSKY LVIV NATIONAL MEDICAL UNIVERSITY, LVIV, UKRAINE
2. SHUPYK NATIONAL UNIVERSITY OF HEALTH OF UKRAINE, KYIV, UKRAINE
3. NATIONAL ACADEMY OF MEDICAL SCIENSE OF UKRAINE GOVERNMENT INSTITUTION «INSTITUTE OF URGENT AND RECOVERY SURGERY NAMED AFTER V.K.GUSAK», KYIV, UKRAINE
4. KREMENCHUK REGIONAL ONCOLOGY HEALTH CENTER OF THE POLTAVA REGIONAL COUNCIL, KREMENCHUK, UKRAINE
5. REGIONAL MEDICAL CENTRE OF FAMILY HEALTH «DNIPROPETROVSK REGIONAL COUNCIL», DNIPRO, UKRAINE