∗Center for OCD & Related Disorders (CORD), Department of Psychiatry, Massachusetts General Hospital, Boston

†Department of Psychiatry, Harvard Medical School, Boston

‡McLean Hospital, Belmont, Massachusetts.

Send reprint requests to Ivar Snorrason, PhD, Center for OCD & Related Disorders (CORD), Massachusetts General Hospital, 185 Cambridge St, Boston, MA 02114. E-mail: [email protected].

Supplemental digital content is available for this article. Direct URL citations appear in the printed text and are provided in the HTML and PDF versions of this article on the journal’s Web site (www.jonmd.com).