1. Friedrich-Alexander-University Erlangen-Nuremberg, Chair of Pattern Recognition , Erlangen , Germany
2. University Hospital Erlangen, Neuroscience Lab , Erlangen , Germany
3. Zentrum für Messen und Kalibrieren & ANALYTIK GmbH , Bitterfeld-Wolfen , Germany
4. Development Center X-ray Technology , Fraunhofer Institute for Integrated Circuits , Fürth , Germany