[1] Med Univ Hosp Tubingen, Dept Psychosomat Med & Psychotherapy, Tubingen, Germany
[2] Max Planck Inst Biol Cybernet, Tubingen, Germany
[3] Univ Tubingen, Ctr Neurol, Div Neuropsychol, Tubingen, Germany
[4] Univ Tubingen, Int Max Planck Res Sch, Grad Training Ctr Neurosci, Tubingen, Germany
[5] Univ Tubingen, Inst Epidemiol & Appl Biometry, Tubingen, Germany