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APA Citation
Patel, M. S., Volpp, K. G., Rosin, R., Bellamy, S. L., Small, D. S., Fletcher, M. A., Osman-Koss, R., Brady, J. L., Haff, N., Lee, S. M., Wesby, L., Hoffer, K., Shuttleworth, D., Taylor, D. H., Hilbert, V., Zhu, J., Yang, L., Wang, X., & Asch, D. A. (2016). a Randomized Trial of Social Comparison Feedback and Financial Incentives to Increase Physical Activity. American journal of health promotion, 30(6), 416–424. http://access.bl.uk/ark:/81055/vdc_100064793233.0x000006