[1] Univ Med Ctr Hamburg Eppendorf, Dept Syst Neurosci, Hamburg, Germany
[2] Univ Regensburg, Dept Neurol, Regensburg, Germany
[3] Univ Wurzburg, Dept Psychol 1, Wurzburg, Germany
[4] Univ Regensburg, Regensburg, Germany
[5] Univ Wurzburg, Dept Psychiat Psychosomat & Psychotherapy, Wurzburg, Germany
[6] Schmerzklin Kiel, Kiel, Germany
[7] Rhein Westfal TH Aachen, Dept Psychiat & Psychotherapy, Aachen, Germany
[8] Univ Essen Gesamthsch, Dept Neurol, Essen, Germany