1. Division of Clinical Pharmacology and Toxicology, Department of Biomedicine and Department of Clinical Research; University Hospital Basel; Βasel CH-4031 Switzerland
2. Department of Psychiatry, Psychotherapy and Psychosomatics, Psychiatric Hospital; University of Zurich; Lenggstrasse 31 Zurich CH-8032 Switzerland
3. Institute of Biochemistry and Molecular Medicine; University of Bern; Bühlstrasse 28 Bern CH-3012 Switzerland