Modification of the sample size and the schedule of interim analyses in survival trials based on data inspections, by H. Schäfer and H.-H. Müller, Statistics in Medicine 2001; 20: 3741-3751. [electronic resource]
Producer: 20040722Description: 1333-4; author reply 1334-5 p. digitalISSN:- 0277-6715
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Publication Type: Comment; Letter
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