Concealing Block Sizes Is Not Sufficient.
National Cancer Institute and University of Maryland Baltimore County, Biometry Research Group, National Cancer Institute, Rockville, MD, USA.
Vance W
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Berger
Department of Biostatistics, Bioinformatics and Biomathematics, Georgetown University, Washington, DC, USA.
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D006801:Humans; D016032:Randomized Controlled Trials as Topic / Q000379:methods*