1. Department of Psychiatry; Yale University School of Medicine; New Haven Connecticut
2. Olin Neuropsychiatry Research Center; Institute of Living; Hartford Connecticut
3. Centro de Investigación en Biología Molecular y Celular; Universidad de Costa Rica; San José Costa Rica
4. Escuela de Biología; Universidad de Costa Rica; San José Costa Rica
5. Department of Genetics; Texas Biomedical Research Institute; San Antonio Texas
6. Department of Psychology; University of Minnesota; Minneapolis Minnesota