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Study of Health and Activity in Preschool Environments (SHAPES): Study protocol for a randomized trial evaluating a multi-component physical activity intervention in preschool children

Karin A Pfeiffer*, Ruth P Saunders, William H Brown, Marsha Dowda, Cheryl L Addy and Russell R Pate

BMC Public Health 2013, 13:728  doi:10.1186/1471-2458-13-728

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