Correction: Measuring Physical Activity with Hip Accelerometry among U.S. Older Adults: How Many Days Are Enough?
[This corrects the article DOI: 10.1371/journal.pone.0170082.].
Masha
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Kocherginsky
Megan
M
Huisingh-Scheetz
William
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Dale
Diane S
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Lauderdale
Linda
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Waite