1. STUDENT ASSOCIATION OF NEUROLOGY AT THE DEPARTMENT OF NEUROLOGY, INSTITUTE OF MEDICAL SCIENCES, OPOLE UNIVERSITY, OPOLE, POLAND
2. DEPARTMENT OF PSYCHIATRY, ST. JADWIGA REGIONAL SPECIALIZED HOSPITAL, OPOLE, POLAND
3. DEPARTMENT OF NEUROLOGY, INSTITUTE OF MEDICAL SCIENCES, UNIVERSITY OF OPOLE, OPOLE, POLAND; DEPARTMENT OF NEUROLOGY, ST. JADWIGA REGIONAL SPECIALIZED HOSPITAL, OPOLE, POLAND