1. Department of Human Genetics, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, CA 90095, USA
2. Longitudinal Studies Section, Translational Gerontology Branch, National Institute on Aging, National Institutes of Health, USA. Baltimore, MD 21224, USA
3. Department of Neurology, UCLA School of Medicine, University of California Los Angeles, Los Angeles, CA 90095, USA
4. Department of Epidemiology, UCLA Fielding School of Public Health, University of California Los Angeles, Los Angeles, CA 90095, USA
5. Geriatric Unit, Azienda Sanitaria Firenze (ASF), Florence, Italy
6. Cancer Prevention Program, Division of Public Health Sciences, Fred Hutchinson Cancer Research Center, Seattle, WA 98109-1024, USA
7. Department of Medicine, New York University, New York, NY 10016, USA
8. Department of Epidemiology, University of Iowa, 145 N. Riverside Drive, Iowa City, IA 52242, USA
9. Department of Medicine, Stanford University School of Medicine, Stanford, CA 94305, USA
10. VA Palo Alto Health Care System, Palo Alto CA 94304, USA
11. HudsonAlpha Institute for Biotechnology, Huntsville, AL 35806, USA
12. Department of Epidemiology, Gillings School of Global Public Health, University of North Carolina, Chapel Hill, NC 27599, USA
13. Department of Genetics, School of Medicine, University of North Carolina, Chapel Hill, NC 27599, USA
14. Department. of Biostatistics, Gillings School of Global Public Health, University of North Carolina, Chapel Hill, NC 27599, USA
15. Department of Preventive Medicine, Feinberg School of Medicine, Northwestern University Chicago, IL 60611, USA
16. Robert H. Lurie Comprehensive Cancer Center, Feinberg School of Medicine, Northwestern University Chicago, IL 60611, USA
17. Laboratory of Environmental Epigenetics, Departments of Environmental Health Sciences Epidemiology, Columbia University Mailman School of Public Health, New York, NY 10032, USA
18. Department of Medicine, School of Medicine, University of North Carolina, Chapel Hill, NC 27599, USA
19. Department of Biostatistics, Fielding School of Public Health, University of California Los Angeles, Los Angeles, CA 90095, USA