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APA Citation
Edwards, E. A., Lumsden, J., Rivas, C., Steed, L., Edwards, L. A., Thiyagarajan, A., Sohanpal, R., Caton, H., Griffiths, C. J., Munafò, M. R., Taylor, S., & Walton, R. T. (2016). gamification for health promotion: systematic review of behaviour change techniques in smartphone apps. BMJ open, 6(10), . http://access.bl.uk/ark:/81055/vdc_100135137728.0x00000c