CITATION STYLE
Spiegelhalter, D. J., & Freedman, L. S. (1988). A predictive approach to selecting the size of a clinical trial, based on subjective clinical opinion. Recent Results in Cancer Research. Fortschritte Der Krebsforschung. Progrès Dans Les Recherches Sur Le Cancer, 111, 195–206. https://doi.org/10.1007/978-3-642-83419-6_24
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