1. Department of Applied Physics; University of Eastern Finland; Kuopio Finland
2. Center for Magnetic Resonance Research; Department of Radiology; University of Minnesota; Minneapolis Minnesota USA
3. Department of Orthopaedic Surgery; University of Minnesota; Minneapolis Minnesota USA
4. Department of Neurobiology; A.I. Virtanen Institute for Molecular Medicine; University of Eastern Finland; Kuopio Finland
5. Department of Diagnostic Radiology; Oulu University Hospital and University of Oulu; Oulu Finland
6. Medical Research Center Oulu; Oulu University Hospital and University of Oulu; Oulu Finland