[1] Maastricht Univ, Dept Psychiat & Neuropsychol, Maastricht, Netherlands
[2] Eli Lilly Nederland, Houten, Netherlands
[3] Univ Barcelona, Hosp Clin, Dept Psychiat, E-08007 Barcelona, Spain
[4] Eli Lilly & Co, Lilly Res Ctr Ltd, EHOR, Windlesham GU20 6PH, Surrey, England