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Measuring Physical Activity with Hip Accelerometry among U.S. Older Adults: How Many Days Are Enough?
- Masha Kocherginsky,
- Megan Huisingh-Scheetz,
- William Dale,
- Diane S. Lauderdale,
- Linda Waite
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- Published: January 12, 2017
- https://doi.org/10.1371/journal.pone.0170082