1. Department of Anaesthesia and Intensive Therapy; University of Debrecen; Debrecen Hungary
2. Department of Anaesthesia and Intensive Therapy; Péterfy Street Hospital and Trauma Centre; Budapest Hungary
3. Department of Anatomy, Histology and Embryology; Semmelweis University; Budapest Hungary
4. Department of Anatomy, Histology and Embryology; Clinical Anatomy Research Laboratory; Semmelweis University; Budapest Hungary