Reproducibility and relative validity of the short questionnaire to assess health-enhancing physical activity

Author: Wendel-Vos G.C.W.   Schuit A.J.   Saris W.H.M.   Kromhout D.  

Publisher: Elsevier

ISSN: 0895-4356

Source: Journal of Clinical Epidemiology, Vol.56, Iss.12, 2003-12, pp. : 1163-1169

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