1. DEPARTMENT OF PEDIATRIC EMERGENCY MEDICINE, 2ND CHAIR OF PEDIATRICS, CENTRAL CLINICAL HOSPITAL, MEDICAL UNIVERSITY OF LODZ, LODZ, POLAND; DEPARTMENT OF MANAGEMENT AND LOGISTICS IN HEALTHCARE, MEDICAL UNIVERSITY OF LODZ, LODZ, POLAND
2. DEPARTMENT OF PEDIATRIC SURGERY AND ONCOLOGY, CHAIR OF SURGICAL PEDIATRICS, CENTRAL CLINICAL HOSPITAL, MEDICAL UNIVERSITY OF LODZ, LODZ, POLAND
3. DEPARTMENT OF PEDIATRIC EMERGENCY MEDICINE, 2ND CHAIR OF PEDIATRICS, CENTRAL CLINICAL HOSPITAL, MEDICAL UNIVERSITY OF LODZ, LODZ, POLAND