title: An agenda to extend and enhance life.
authors.forename: R N
authors.initials: RN
authors.lastname: Butler
mesh_terms: D000368:Aged; D000375:Aging / Q000502:physiology / Q000523:psychology; D006801:Humans; D012106:Research / Q000191:economics / Q000331:legislation & jurisprudence; D014481:United States