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. 2013 May 24;8(5):e65219. doi: 10.1371/journal.pone.0065219

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© 2013 Jaekel 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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Symbols represent the unique percentage of variance explained (R ²) by biological factors (GA, birth weight, OPTI score) in children's performance on low, moderate, and high cognitive workload (WL) tasks at age 8;5 years according to gestational age groups (n = 1326).