University of Pennsylvania - Department of Neuroscience, Karolinska Institutet - Department of Medical Biochemistry and Biophysics, Linkoping University - Department of Biomedical and Clinical Sciences, Karolinska Institutet - Department of Medical Biochemistry and Biophysics, Karolinska Institutet - Department of Medical Biochemistry and Biophysics, Linkoping University - Department of Biomedical and Clinical Sciences, University of Pennsylvania - Department of Neuroscience, University of Pennsylvania - Department of Neuroscience, University of Pennsylvania - Department of Neuroscience, University of Pennsylvania - Department of Neuroscience, University of Pennsylvania - Department of Neuroscience, University of Pennsylvania, Perelman School of Medicine, Department of Dermatology, University of Pennsylvania - Hospital of the University of Pennsylvania, University of Pennsylvania - Department of Genetics, University of Pennsylvania - Department of Neuroscience, Linkoping University - Center for Social and Affective Neuroscience, Karolinska Institutet - Department of Medical Biochemistry and Biophysics and University of Pennsylvania - Department of Neuroscience