1. Human Genetics Center, Department of Epidemiology, Human Genetics and Environmental Sciences, School of Public Health, University of Texas Health Science Center at Houston
2. Centre for Genomic and Experimental Medicine, Institute of Genetics and Molecular Medicine
3. Centre for Cognitive Ageing and Cognitive Epidemiology, University of Edinburgh, UK
4. Brown Foundation Institute of Molecular Medicine, McGovern Medical School, University of Texas Health Science Center at Houston
5. Department of Neurology, Johns Hopkins University School of Medicine, Baltimore, Maryland
6. Department of Epidemiology, Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland
7. Division of Geriatrics, Department of Medicine, University of Mississippi Medical Center, Jackson
8. Division of Biostatistics, School of Public Health
9. Division of Epidemiology and Community Health, School of Public Health, University of Minnesota, Minneapolis
10. Division of Psychiatry, University of Edinburgh, Royal Edinburgh Hospital, UK
11. Department of Psychology, University of Edinburgh, UK
12. Human Genome Sequencing Center, Baylor College of Medicine, Houston, Texas