| Author Notes: |
Robert N. Butler, M.D., is the president and CEO of the International Longevity Center - USA and a professor at Columbia University's Mailman School of Public Health. The author of the Pultizer Prize-winning Why Survive? Being Old in America and chair of the Council on Aging of the World Economic Forum (Davos), he is a frequent adviser to international agencies, including the World Health Organization, and served as medical editor-in-chief of Geriatrics for more than a decade. He lives in New York City.
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