1 Department of Psychiatry, Sinai Health, Toronto, ON, Canada; University of Toronto Medical School, Toronto, ON, Canada.
2 Center for Behavioral Cardiovascular Health, Columbia University Medical Center, New York, NY, USA; Columbia University Medical School, New York, NY, USA.
3 Harvard Medical School, Boston, MA, USA; Department of Psychiatry, Massachusetts General Hospital, Boston, MA, USA. Electronic address: jhuffman@mgh.harvard.edu.