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APA Citation
Weber, G. M., Adams, W. G., Bernstam, E. V., Bickel, J. P., Fox, K. P., Marsolo, K., Raghavan, V. A., Turchin, A., Zhou, X., Murphy, S. N., & Mandl, K. D. (n.d.). biases introduced by filtering electronic health records for patients with "complete data". Journal of the American Medical Informatics Association, 24, 1134–1141. http://access.bl.uk/ark:/81055/vdc_100117153264.0x00002a