1. Department of Neurosurgery, Polish-Mother’s Memorial Hospital Research Institute, Lodz, Poland
2. Department of Medical Rehabilitation, Faculty of Health Sciences, Medical University of Lodz, Poland
3. Department of Gastroenterology, Allergology and Paediatrics, Polish-Mother’s Memorial Hospital Research Institute, Lodz, Poland
4. Department of Management and Logistics in Healthcare, Medical University of Lodz, Poland
5. Collegium of Management, WSB Merito University of Warsaw, Poland