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Walking behaviours from the 1965–2003 American Heritage Time Use Study (AHTUS)

Catrine Tudor-Locke*, Hidde P van der Ploeg, Heather R Bowles, Michael Bittman, Kimberly Fisher, Dafna Merom, Jonathan Gershuny, Adrian Bauman and Muriel Egerton

International Journal of Behavioral Nutrition and Physical Activity 2007, 4:45  doi:10.1186/1479-5868-4-45

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