![](/img/cover-not-exists.png)
Physical Activity and Screen Time: Trends in U.S. Children Aged 9 to 13 Years, 2002–2006
Huhman, Marian, Lowry, Richard, Lee, Sarah M., Fulton, Janet E., Carlson, Susan A., Patnode, Carrie D.Volume:
9
Language:
english
Journal:
Journal of Physical Activity and Health
DOI:
10.1123/jpah.9.4.508
Date:
May, 2012
File:
PDF, 284 KB
english, 2012