1. Human Performance Laboratory; University of Calgary; Calgary Canada
2. Advanced Biomedical and Welfare Technology R&BD Group; Korea Institute of Industrial Technology; Cheonan-si Korea
3. Department of Applied Physics; University of Eastern Finland; Kuopio Finland
4. Faculty of Medicine; Research Unit of Medical Imaging; Physics and Technology; University of Oulu; Oulu Finland
5. Department of Diagnostic Radiology; Oulu University Hospital; Oulu Finland