[Use it and lose it].
Aartsen
Marja
M
Rijksuniversiteit Groningen.
Deelman
Betto
B
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