1. Bipolar Collaborative Network; Bethesda Maryland
2. Department of Psychiatry and Behavioral Sciences; George Washington University; Washington District of Columbia
3. Department of Psychiatry and Biobehavioral Sciences; David Geffen School of Medicine; University of California; Los Angeles California
4. Department of Psychiatry; VA Greater Los Angeles Healthcare System; West Los Angeles Healthcare Center; Los Angeles California
5. Department of Psychiatry and Amsterdam Public Health Research Institute; VU University Medical Center; Amsterdam The Netherlands
6. Lindner Center of HOPE; Mason Ohio
7. Biological Psychiatry Program; University of Cincinnati Medical College; Cincinnati Ohio
8. Department of Psychiatry; Mayo Clinic; Rochester Minnesota
9. Klinikum am Weissenhof, Weinsberg Germany & Paracelsus Medical University; Nuremberg Germany
10. Department of Psychiatry and Behavioral Sciences; Stanford University School of Medicine; Palo Alto California
11. V.A. Palo Alto Health Care System; Palo Alto California
12. Department of Psychiatry & Behavioral Neuroscience; University of Cincinnati College of Medicine; Cincinnati Ohio
13. University Medical Center; University of Groningen; Groningen the Netherlands