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APA Citation
Duncan, M. J., Birch, S. L., Eyre, E., Bryant, E., Rutten, C., Boen, F., & Seghers, J. (n.d.). comparisons in ambulatory physical activity in children from the United Kingdom and Belgium. Annals of human biology, 42, 290–292. http://access.bl.uk/ark:/81055/vdc_100025981564.0x000033