[1] CIVIL HOSP,DEPT PSYCHIAT,CHARLEROI,BELGIUM
[2] CIVIL HOSP LAB,CHARLEROI,BELGIUM
[3] STATE UNIV LIEGE,BIOL PSYCHIAT & PSYCHOPHARMACOL UNIT,B-4000 LIEGE,BELGIUM
[4] STATE UNIV LIEGE,DEPT MED CLIN,B-4000 LIEGE,BELGIUM
[5] STATE UNIV LIEGE,PSYCHONEUROENDOCRINOL UNIT,B-4000 LIEGE,BELGIUM