1. Department of Psychiatry and Human Behavior, Brown University, Butler Hospital, Providence, RI, USA;
2. Departments of Emergency Medicine, Psychiatry, and Quantitative Health Sciences, University of Massachusetts Medical School, Worcester, MA, USA;
3. Department of Psychiatry and Human Behavior, Brown University, Providence, RI, USA;
4. Department of Emergency Medicine, Massachusetts General Hospital Harvard Medical School, Boston, MA, USA