1. Center for Psychiatry and Behavioral Medicine, Las Vegas, Nevada.
2. Baylor College of Medicine, Houston, Texas.
3. University of Florida and Florida Clinical Research Center, Bradenton, Florida.
4. Department of Psychiatry and Behavioral Science, Duke University, Durham, North Carolina.
5. Florida Clinical Research Center, LLC, Maitland, Florida.
6. Miami Research Associates, South Miami, Florida.
7. Westex Clinical Investigations, Lubbock, Texas.