1. CLINIC OF ANAESTHESIOLOGY, INTENSIVE CARE AND EMERGENCY MEDICINE, POMERANIAN MEDICAL UNIVERSITY IN SZCZECIN, SZCZECIN, POLAND
2. PHD STUDENT AT THE DEPARTMENT OF PAEDIATRIC NEUROSURGERY, DEPARTMENT OF NEUROSURGERY, FACULTY OF MEDICAL SCIENCES IN KATOWICE, MEDICAL UNIVERSITY OF SILESIA IN KATOWICE, KATOWICE, POLAND; DEPARTMENT OF EMERGENCY MEDICINE, MEDICAL INSTITUTE, JAN GRODEK HIGHER VOCATIONAL SCHOOL IN SANOK, SANOK, POLAND; EMERGENCY MEDICINE DEPARTMENT IN TARNOW, TARNOW, POLAND
3. PARAMEDIC VOLUNTEER FIRE BRIGADE IN ZAKLICZYN, ZAKLICZYN, POLAND
4. DEPARTMENT OF EMERGENCY MEDICINE, MEDICAL INSTITUTE, JAN GRODEK HIGHER VOCATIONAL SCHOOL IN SANOK, SANOK, POLAND
5. PHD STUDENT AT THE DEPARTMENT OF HEALTH POLICY OF THE DEPARTMENT OF POLITICS AND PUBLIC HEALTH, FACULTY OF HEALTH SCIENCES IN BYTOM, MEDICAL UNIVERSITY OF SILESIA IN KATOWICE, BYTOM, POLAND