1. DEPARTMENT OF PRIMARY HEALTH CARE, MEDICAL UNIVERSITY OF BIALYSTOK, BIALYSTOK, POLAND
2. DEPARTMENT OF INTEGRATED MEDICAL CARE, MEDICAL UNIVERSITY OF BIALYSTOK, BIALYSTOK, POLAND
3. UNIVERSITY CLINICAL HOSPITAL IN WROCLAW, WROCLAW, POLAND
4. DEPARTMENT OF EMERGENCY MEDICAL SERVICE, FACULTY OF MEDICINE, SILESIAN ACADEMY IN KATOWICE, KATOWICE, POLAND; REGIONAL AMBULANCE SERVICE IN SOSNOWIEC, SOSNOWIEC, POLAND
5. DEPARTMENT OF EMERGENCY MEDICINE, MEDICAL UNIVERSITY OF BIALYSTOK, BIALYSTOK, POLAND
6. DEPARTMENT OF EMERGENCY MEDICINE, MEDICAL UNIVERSITY OF BIALYSTOK, BIALYSTOK, POLAND; DEPARTMENT OF GENERAL AND ENDOCRINE SURGERY, MEDICAL UNIVERSITY OF BIALYSTOK, BIALYSTOK, POLAND
7. DEPARTMENT OF SURGICAL NURSING, MEDICAL UNIVERSITY OF BIALYSTOK, BIALYSTOK, POLAND