| http://www.w3.org/ns/prov#value | - However, the report, titled Explaining Divergent Levels of Longevity in High-Income Countries, suggests that gaps in research make it difficult to draw hard and fast conclusions about how factors such as diet, physical inactivity and social integration affect longevity.Dr. David L. Katz, director of the Prevention Research Center at Yale University School of Medicine, said he believes the shortfal
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