1. KHARKIV NATIONAL MEDICAL UNIVERSITY, KHARKIV, UKRAINE; COMMUNAL NON-PROFIT ENTERPRISE “CITY MATERNITY HOSPITAL No. 1” OF KHARKIV CITY COUNCIL, KHARKIV, UKRAINE
2. KHARKIV MEDICAL ACADEMY OF POSTGRADUATE EDUCATION, KHARKIV, UKRAINE
3. ALUNA PUBLISHING HOUSE, KONSTANCIN-JEZIORNA, POLAND
4. COMMUNAL NON-PROFIT ENTERPRISE “CITY MATERNITY HOSPITAL No. 3” OF KHARKIV CITY COUNCIL, KHARKIV, UKRAINE