Physical Activity and Performance at School

American Medical Association (AMA) - Tập 166 Số 1 - Trang 49 - 2012
Amika Singh1,2
1Department of Clinical Epidemiology and Biostatistics (Dr Twisk), Vrije Universiteit (VU) University Medical Center, and Department of Methodology and Applied Biostatistics, Institute of Health Sciences, VU University (Dr Twisk), Amsterdam, the Netherlands.
2Department of Public and Occupational Health, EMGO Institute for Health and Care Research (Drs Singh, van Mechelen,

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