Assessing Whether Consent for a Clinical Trial Is Voluntary ANNALS OF INTERNAL MEDICINE Horwitz, R. H., Roberts, L. W., Seal, D. W., Joseph, P., Maschke, K. J., Verdier, R. I., Nerette, S., Pape, J. W., Fitzgerald, D. W. 2013; 158 (3): 222-224

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