title: Challenge of aging.
authors.affiliation: Division of Geriatric Medicine, University of Oxford, Radcliffe Infirmary.
authors.forename: J G
authors.initials: JG
authors.lastname: Evans
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D000375:Aging / Q000502:physiology*; D005260:Female; D006299:Health Services for the Aged; D006801:Humans; D008017:Life Expectancy; D008297:Male; D011788:Quality of Life; D006113:United Kingdom