1. Department of Natural Sciences, Middlesex University London, London, U.K
2. Department of Anesthesiology and Intensive Care Medicine, University Medical Centre Schleswig-Holstein, Kiel, Germany
3. PEDEGO Research Unit, Medical Research Center, University of Oulu, Oulu, Finland
4. Department of Radiology, Medical University of Graz, Graz, Austria
5. Department of Electronic and Electrical Engineering, University College London, London, U.K