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APA Citation
Yang, R., Hale, L., Branas, C., Perlis, M., Gallagher, R., Killgore, W., Gehrels, J., Alfonso-Miller, P., & Grandner, M. (n.d.). 0189 Work Productivity Loss Associated with Sleep Duration, Insomnia Severity, Sleepiness, and Snoring. Sleep, 41, A74. http://access.bl.uk/ark:/81055/vdc_100095513869.0x000049