[1] Ruhr Univ Bochum, Res Dept Cognit Neuropsychiat & Psychiat Preventa, D-44791 Bochum, Germany
[2] Ruhr Univ Bochum, Int Grad Sch Neurosci, D-44791 Bochum, Germany
[3] Celal Bayar Univ, Dept Psychiat, Manisa, Turkey
[4] Roudebush VA Med Ctr, Indianapolis, IN USA