1. Department of Radiology, Massachusetts General Hospital, Harvard Medical School, Athinoula A. Martinos Center for Biomedical Imaging, Charlestown, Massachusetts 02129-2020, United States
2. Neurobiology Research Unit, Copenhagen University Hospital, Rigshospitalet, Copenhagen DK-2100, Denmark
3. Department of Psychiatry, Massachusetts General Hospital, Harvard Medical School, Center for the Neuroscience of Psychedelics, Charlestown, Massachusetts 02129, United States