1. Department of Addictive Behavior and Addiction Medicine, Central Institute of Mental Health, Medical Faculty Mannheim; University of Heidelberg; Germany
2. Department of Genetic Epidemiology in Psychiatry, Central Institute of Mental Health, Medical Faculty Mannheim; University of Heidelberg; Germany
3. Department of Psychiatry and Psychotherapy; Charité-Universitätsmedizin Berlin; Germany
4. Division of Mind and Brain Research, Department of Psychiatry and Psychotherapy; Charité-Universitätsmedizin Berlin; Germany