1. Experimental and Clinical Pharmacology Research Group, Department of Medical Biology, UiT, The Arctic University of Norway, Hansine Hansens vei 14, N-9037 Tromsø, Norway
2. Center for Psychopharmacology, Diakonhjemmet Hospital, Forskningsveien 13, N-0373 Oslo, Norway
3. Institute of Cardiovascular & Medical Sciences, University of Glasgow, West Medical Building, Glasgow G12 8QQ, UK