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@article{Tanskanen2020a,
author = "Antti O. Tanskanen, Mirkka Danielsbacka, Anna Rotkirch",
title = "Grandparental Childcare for Biological, Adopted, and Step-Offspring: Findings From Cross-National Surveys.",
year = 2020,
journal = "Evolutionary Psychology",
volume = 18,
number = 1,
url = "https://doi.org/10.1177/1474704920907894"
}