1. STUDENT RESEARCH GROUP AT THE CHAIR AND DEPARTMENT OF PATHOMORPHOLOGY FACULTY OF MEDICAL SCIENCES IN ZABRZE, MEDICAL UNIVERSITY OF SILESIA, ZABRZE, POLAND
2. HOSPITAL EMERGENCY DEPARTMENT, ST. JOHN PAUL II MAZOVIA REGIONAL HOSPITAL IN SIEDLCE, SIEDLCE, POLAND; NURSING AT COLLEGIUM MAZOVIA INNOVATIVE UNIVERSITY IN SIEDLCE, COLLEGIUM MAZOVIA INNOVATIVE UNIVERSITY IN SIEDLCE, SIEDLCE, POLAND
3. CHAIR AND DEPARTMENT OF PATHOMORPHOLOGY, FACULTY OF MEDICAL SCIENCES IN ZABRZE, MEDICAL UNIVERSITY OF SILESIA, ZABRZE, POLAND