1. General Psychology: Cognition and Center for Behavioral Addiction Research (CeBAR), University of Duisburg-Essen, Germany
2. Erwin L. Hahn Institute for Magnetic Resonance Imaging, Essen, Germany
3. Departments of Psychiatry, Neuroscience and Child Study, Yale University School of Medicine, New Haven, USA
4. Connecticut Council on Problem Gambling, Wethersfield, USA
5. Connecticut Mental Health Center, New Haven, USA