[1] Maastricht Univ, Dept Psychiat & Neuropsychol PAR 45, European Grad Sch Neurosci, Maastricht, Netherlands
[2] Reg Mental Hlth Ctr Vijverdal, Maastricht, Netherlands
[3] Univ Ctr, St Jozef, Kortenberg, Belgium
[4] Inst Psychiat, Div Psychol Med, London SE5 8AF, England