1. Department of Psychiatry and Behavioral Sciences, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
2. Department of Psychiatry, Boston University School of Medicine, Boston, Massachusetts, USA
3. Department of Psychiatry and Behavioral Sciences, University of Washington School of Medicine, Seattle, Washington, USA
4. Welch Medical Library, Johns Hopkins University, Baltimore, Maryland, USA
5. Department of Communication Studies, Mount Saint Vincent University, Halifax, Nova Scotia, Canada