ArticleJournal of epidemiology2001
Validity and reliability of single-item questions about physical activity.
N Iwai et al.PubMed ↗Full text ↗Publisher ↗
No numbers read from the abstract.
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ArticleJournal of epidemiology2001
N Iwai et al.PubMed ↗Full text ↗Publisher ↗
No numbers read from the abstract.