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International Journal of Geriatric Psychiatry > 25 > 5 > 483 - 488
Annals of Epidemiology > 1996 > 6 > 2 > 154-159
International Journal of Geriatric Psychiatry > 25 > 5 > 483 - 488
Annals of Epidemiology > 1996 > 6 > 2 > 154-159