[1] Univ Antwerp, Collaborat Antwerp Psychiat Res Inst, B-2610 Antwerp, Belgium
[2] Univ Psychiat Ctr St Norbertushuis, B-2570 Duffel, Duffel, Belgium
[3] Vrije Univ Brussel, Software Languages Lab, B-1050 Brussels, Belgium
[4] Vrije Univ Brussel, Web & Informat Syst Engn Lab, B-1050 Brussels, Belgium
[5] Psychiat Ctr Bros Alexians, B-2530 Boechout, Boechout, Belgium