1. Addiction Biology Unit; Department of Psychiatry and Neurochemistry; Institute of Neuroscience and Physiology; The Sahlgrenska Academy at University of Gothenburg; Sweden
2. Department of Physiology; Institute of Neuroscience and Physiology; The Sahlgrenska Academy at the University of Gothenburg; Sweden
3. Beroendekliniken; Sahlgrenska University Hospital; Sweden