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Children's physical activity levels during school recess: a quasi-experimental intervention study
Nicola D Ridgers, Gareth Stratton, Stuart J Fairclough, Jos WR TwiskVolume:
4
Language:
english
DOI:
10.1186/1479-5868-4-19
Date:
December, 2007
File:
PDF, 233 KB
english, 2007