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Ernest D. Prentice, L. Antonson, Lyal G. Leibrock, Timothy K. Kelso, Thomas D. Sears, IRB Review of a Phase II Randomized Clinical Trial Involving Incompetent Patients Suffering from Severe Closed Head Injury, IRB: Ethics & Human Research, Vol. 15, No. 5 (Sep. - Oct., 1993), pp. 1-7
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Prentice et al. (1993) studied this question.
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