1. Department of Biomedical Technology, Faculty of Biomedical Engineering, Czech Technical University in Prague, Prague, Czech Republic
2. Department of Psychiatry, Krajska zdravotni, as Most Hospital, Most, Czech Republic
3. Pain Management Center, Department of Anesthesiology and Intensive Care, First Faculty of Medicine, Charles University in Prague and General University Hospital in Prague, Prague, Czech Republic
4. Department of Psychiatry, First Faculty of Medicine, Charles University and General University Hospital in Prague, Prague, Czech Republic
5. Department of Physiology, Third Faculty of Medicine, Charles University, Prague, Czech Republic
6. Department of Radiation Oncology, University of Maryland School of Medicine, Baltimore, MD, USA