title: Balanced aging, or successful aging?
authors.forename: James P
authors.initials: JP
authors.lastname: Butler
authors.forename: Masahiko
authors.initials: M
authors.lastname: Fujii
authors.forename: Hidetada
authors.initials: H
authors.lastname: Sasaki
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D000375:Aging; D006304:Health Status; D006801:Humans; D008019:Life Style; D011788:Quality of Life