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APA Citation
Cataife, G., & Pagano, M. B. (2017). difference in difference: simple tool, accurate results, causal effects. Transfusion, 57(5), 1113–1114. http://access.bl.uk/ark:/81055/vdc_100045732233.0x00004b
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Cataife, G., & Pagano, M. B. (2017). difference in difference: simple tool, accurate results, causal effects. Transfusion, 57(5), 1113–1114. http://access.bl.uk/ark:/81055/vdc_100045732233.0x00004b