title: Aging: a challenge beyond the year 2000.
authors.affiliation: Research Program on Aging, World Health Organization, Geneva, Switzerland.
authors.forename: J
authors.initials: J
authors.lastname: Litvak
mesh_terms: D000368:Aged; D000375:Aging; D006285:Health Planning; D006299:Health Services for the Aged; D006801:Humans; D011157:Population Dynamics; D014944:World Health Organization