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APA Citation
Quartagno, M., Carpenter, J. R., Walker, A. S., Clements, M., & Parmar, M. K. (2020). the DURATIONS randomised trial design: Estimation targets, analysis methods and operating characteristics. Clinical trials, 17, 644–653. http://access.bl.uk/ark:/81055/vdc_100109236327.0x00001e