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Marjorie E. Starrels, Berit Ingersoll-Dayton, Margaret B. Neal, Hiroko Yamada, Intergenerational Solidarity and the Workplace: Employees' Caregiving for Their Parents, Journal of Marriage and Family, Vol. 57, No. 3 (Aug., 1995), pp. 751-762
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Starrels et al. (1995) studied this question.
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