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APA Citation
Peterson, R. L., Vock, D. M., Powers, J. H., Emery, S., Cruz, E. F., Hunsberger, S., Jain, M. K., Pett, S., Neaton, J. D., & , (2017). analysis of an ordinal endpoint for use in evaluating treatments for severe influenza requiring hospitalization. Clinical trials, 14, 264–276. http://access.bl.uk/ark:/81055/vdc_100070696072.0x000015