title: [Use it and lose it].
authors.affiliation: Rijksuniversiteit Groningen.
authors.forename: Marja
authors.initials: M
authors.lastname: Aartsen
authors.forename: Betto
authors.initials: B
authors.lastname: Deelman
mesh_terms: D000203:Activities of Daily Living; D000368:Aged; D003863:Depression; D005260:Female; D006801:Humans; D008297:Male; D008569:Memory Disorders / Q000517:prevention & control* / Q000523:psychology*; D012919:Social Behavior; D017805:Widowhood