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Assessment of environmental correlates of physical activity: development of a European questionnaire

Heleen Spittaels, Charlie Foster, Jean-Michel Oppert, Harry Rutter, Pekka Oja, Michael Sjöström and Ilse De Bourdeaudhuij*

International Journal of Behavioral Nutrition and Physical Activity 2009, 6:39 doi:10.1186/1479-5868-6-39

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