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Brooke, Hannah L., Kirsten Corder, Simon J. Griffin, Ulf Ekelund, and Esther MF van Sluijs. More of the Same or a Change of Scenery: An Observational Study of Variety and Frequency of Physical Activity in British Children. BioMed Central, 2013.

Brooke, Hannah L., et al. More of the Same or a Change of Scenery: An Observational Study of Variety and Frequency of Physical Activity in British Children. BioMed Central, 2013.