1 Department of Psychiatry, Iowa Neuroscience Institute, University of Iowa, Iowa City, Iowa.
2 Institute of Systems Neuroscience, Heinrich Heine University, Düsseldorf, Germany; Institute of Neuroscience and Medicine (INM-1, INM-7), Forschungszentrum Jülich, Jülich, Germany.
3 Department of Psychiatry, Psychotherapy and Psychosomatics, Faculty of Medicine, RWTH Aachen University, Aachen, Germany.
4 Department of Psychiatry, Iowa Neuroscience Institute, University of Iowa, Iowa City, Iowa; Department of Neuroscience and Pharmacology, University of Iowa, Iowa City, Iowa. Electronic address: thomas-nickl-jockschat@uiowa.edu.