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Mackillop, W. J., M. J. Palmer, B. O'Sullivan, G. K. Ward, R. Steele, und G. Dotsikas. Clinical Trials in Cancer: The Role of Surrogate Patients in Defining What Constitutes an Ethically Acceptable Clinical Experiment. Nature Publishing Group, 1989.

Mackillop, W. J., et al. Clinical Trials in Cancer: The Role of Surrogate Patients in Defining What Constitutes an Ethically Acceptable Clinical Experiment. Nature Publishing Group, 1989.