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Uploaded by DrPapa5 on Sep 9, 2007
Dr. Robert Wolfe from Northwestern University's Feinberg School of Medicine discusses how to choose and wear a backpack.
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Research shows shows that the contents of children's backpacks should not weigh more than 15% of the child's body weight.
PhilGolinsky 4 months ago
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Research shows shows that the contents of children's backpacks should not weigh more than 15% of the child's body weight.
PhilGolinsky 4 months ago