1. Department of Surgery, Second Faculty of Medicine, Charles University and Teaching Hospital Motol, Prague, Czech Republic
2. Spinal Unit, Department of Rehabilitation and Sports Medicine, Second Faculty of Medicine, Charles University and Teaching Hospital Motol, Prague, Czech Republic
3. Department of Spondylosurgery, First Faculty of Medicine, Charles University and Teaching Hospital Motol, Prague, Czech Republic
4. Department of Urology, Second Faculty of Medicine, Charles University and Teaching Hospital Motol, Prague, Czech Republic
5. Department of Anesthesia Resuscitation and Intensive Medicine, Second Faculty of Medicine, Charles University and Teaching Hospital Motol, Prague, Czech Republic