1. Center of Excellence for Neurosciences; Paul L. Foster School of Medicine; Texas Tech University Health Sciences Center; El Paso Texas
2. Department of Psychiatry; Paul L. Foster School of Medicine; Texas Tech University Health Sciences Center; El Paso Texas
3. Langley Porter Psychiatric Institute; University of California at San Francisco; San Francisco California
4. Department of Psychiatry; University of Texas Health Science Center at San Antonio; San Antonio Texas
5. Centro de Investigación en Biología Celular y Molecular y Escuela de Biologia; Universidad de Costa Rica; San Jose Costa Rica
6. South Texas Veterans Health Care System; San Antonio Texas
7. Department of Genetics; Texas Biomedical Research Institute; San Antonio Texas
8. Los Angeles Biomedical Research Center at Harbor; University of California Los Angeles Medical Center; Torrance California
9. Centro Internacional de Trastornos Afectivos y de la Conducta Adictiva; Guatemala Guatemala
10. Instituto de Información e Investigación en Salud Mental AC; Monterrey Nuevo Leon Mexico
11. Grupo de Estudios Médicos y Familiares Carracci; S.C. México D.F. Mexico
12. Instituto Nacional de Medicina Genómica; México D.F. Mexico