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A school-based physical activity program to improve health and fitness in children aged 6–13 years ("Kinder-Sportstudie KISS"): study design of a randomized controlled trial [ISRCTN15360785]

Lukas Zahner, Jardena J Puder, Ralf Roth, Marco Schmid, Regula Guldimann, Uwe Pühse, Martin Knöpfli, Charlotte Braun-Fahrländer, Bernard Marti and Susi Kriemler*

BMC Public Health 2006, 6:147  doi:10.1186/1471-2458-6-147

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