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. 2009 Dec 18;4(12):e8169. doi: 10.1371/journal.pone.0008169

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Whetten et al.

This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are properly credited.

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Legend: Dark bars describe the distribution of institutions. Light bars describe the distribution of institution-based children. Caregivers per 100 children calculated using the total number of children in the participating institutions.