1. Center for Psychosocial Medicine, Institute of Medical Psychology, Heidelberg University Hospital, Bergheimer Str. 20, 69115 Heidelberg, Germany
2. Institute of Psychology, Faculty of Behavioral and Cultural Studies, Heidelberg University, 69117 Heidelberg, Germany
3. Department of Social Neuroscience, Faculty of Psychology, Ruhr-University Bochum, 44791 Bochum, Germany
4. Center for Psychosocial Medicine, Department of General Psychiatry, Heidelberg University Hospital, 69115 Heidelberg, Germany
5. Department of Neuropeptide Research in Psychiatry, Central Institute of Mental Health, Medical Faculty Mannheim, Heidelberg University, 68159 Mannheim, Germany