1. Department of Human Genetics, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, CA 90095, USA
2. Department of Physiology and Biophysics, University of Mississippi Medical Center, Jackson, MS 39216, USA
3. Public Health Sciences Division, Fred Hutchinson Cancer Research Center, Seattle, WA 98109, USA
4. Center of Development and Aging, New Jersey Medical School, Rutgers State University of New Jersey, Newark, NJ 07103, USA
5. Radiation Effects Department, Centre for Radiation, Chemical and Environmental Hazards, Public Health England, Chilton, Didcot, Oxfordshire OX11 0RQ, United Kingdom
6. Center for Population Epigenetics, Robert H. Lurie Comprehensive Cancer Center and Department of Preventive Medicine, Northwestern University Feinberg School of Medicine, Chicago, IL 60611, USA
7. Laboratory of Environmental Epigenetics, Departments of Environmental Health Sciences Epidemiology, Columbia University Mailman School of Public Health, New York, NY 10032, USA
8. Departments of Genetics, Biostatistics, Computer Science, University of North Carolina, Chapel Hill, NC 27599, USA
9. Department of Epidemiology, Gillings School of Global Public Health, University of North Carolina, Chapel Hill, NC 27599, USA
10. Department of Medicine, School of Medicine, University of North Carolina, Chapel Hill, NC 27516, USA
11. Department of Medicine (Division of Cardiovascular Medicine), Stanford University School of Medicine, Stanford, , USA
12. VA Palo Alto Health Care System, Palo Alto, CA 94304, USA
13. Longitudinal Studies Section, Translational Gerontology Branch, National Institute on Aging, National Institutes of Health, USA, Baltimore, MD 21224, USA
14. Department of Biostatistics, Fielding School of Public Health, University of California Los Angeles, Los Angeles, CA 90095, USA