1 Department of Neurosurgery, Massachusetts General Hospital, Boston, Massachusetts; Harvard Medical School, Boston, Massachusetts.
2 Department of Neurosurgery, Massachusetts General Hospital, Boston, Massachusetts.
3 Department of Psychiatry, Massachusetts General Hospital, Boston, Massachusetts; Harvard Medical School, Boston, Massachusetts. Electronic address: mvissani@mgh.harvard.edu.
4 Department of Neurosurgery, Massachusetts General Hospital, Boston, Massachusetts; Harvard Medical School, Boston, Massachusetts. Electronic address: mark.richardson@mgh.harvard.edu.