1. Department of Psychiatry, University Hospital of Bellvitge, Barcelona, Spain
2. Department of Psychiatry, Paulista School of Medicine, Federal University of Sao Paulo, Brazil
3. Department of Psychiatry, University of North Carolina at Chapel Hill, NC, USA
4. Department of Psychiatry, University of Pittsburgh, Pittsburgh, PA, USA
5. Department of Psychiatry, University of Munich (LMU), Munich, Germany
6. Roseneck Hospital for Behavioral Medicine, Prien, Germany
7. New York Presbyterian Hospital-Westchester Division, Weill Medical College of Cornell University, White Plains, NY, USA
8. Department of Psychiatry, Toronto Hospital, Toronto, Canada
9. Department of Psychology, Michigan State University, East Lansing, MI, USA
10. Semel Institute for Neuroscience and Human Behavior, David Geffen School of Medicine, University of California at Los Angeles, Los Angeles, CA, USA
11. Department of Psychiatry, University of Minnesota, Minneapolis, MN, USA
12. Neuropsychiatric Research Institute, Fargo, ND, USA
13. Department of Psychiatry, Neurobiology, Pharmacology and Biotechnologies, University of Pisa, Italy
14. Department of Psychology, University of Iowa, Iowa City, IA, USA
15. Department of Psychiatry, University of Pennsylvania, School of Medicine, Philadelphia, PA, USA
16. St Joseph's Medical Center, Towson, MD, USA
17. Laureate Psychiatric Clinic and Hospital, Tulsa, OK, USA
18. Department of Psychiatry and Department of Nutrition, University of North Carolina at Chapel Hill, Chapel Hill, NC, 27599-7160, USA