1. DEPARTMENT OF EMERGENCY MEDICINE, MEDICAL UNIVERSITY OF BIALYSTOK, BIALYSTOK, POLAND
2. STUDENT RESEARCH CIRCLE AT THE DEPARTMENT OF EMERGENCY MEDICINE, MEDICAL UNIVERSITY OF BIALYSTOK, BIALYSTOK, POLAND, DEPARTMENT OF NURSING, HIGHER MEDICAL SCHOOL IN BIALYSTOK, BIALYSTOK, POLAND
3. FACULTY OF HEALTH SCIENCES, POZNAN UNIVERSITY OF MEDICAL SCIENCES, POZNAN, POLAND
4. DEPARTMENT OF EMERGENCY MEDICAL SERVICE, FACULTY OF MEDICINE,, SILESIAN ACADEMY IN KATOWICE, KATOWICE, POLAND; REGIONAL AMBULANCE SERVICE IN SOSNOWIEC, SOSNOWIEC, POLAND