1. Center for the Study of Aging and Human Development; Duke University Medical Center; Durham NC
2. Social Science Research Institute; Duke University; Durham NC
3. Department of Psychology and Neuroscience; Duke University; Durham NC
4. Department of Psychiatry and Behavioral Sciences; Duke University Medical Center; Durham NC
5. Center for Genomic and Computational Biology; Duke University; Durham NC
6. Social, Genetic, and Developmental Psychiatry Centre; Institute of Psychiatry, Kings College London; London United Kingdom
7. Department of Psychology; Hebrew University; Jerusalem Israel
8. Department of Preventive and Social Medicine; School of Medicine; University of Otago; Dunedin New Zealand