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Trends in television time, non-gaming PC use and moderate-to-vigorous physical activity among German adolescents 200…http://t.co/3KMbpw3Ulw
Trends in television time, non-gaming PC use and moderate-to-vigorous physical activity among German adolescents 200…http://t.co/3KMbpw3Ulw
Trends in television time, non-gaming PC use & physical activity among adolescents 2002-2010 http://t.co/T0OuMQYJAl #health #exercise
Trends in television time, non-gaming PC use & physical activity among adolescents 2002-2010 http://t.co/T0OuMQYJAl #health #exercise