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Rüschoff, J. and Prasser, C. and Cortez, T. and Höhne, H. M. and Hohenberger, W. and Hofstädter, Ferdinand (1993) Diagnostic value of AgNOR staining in follicular cell neoplasms of the thyroid: comparison of evaluation methods and nucleolar features. The American journal of surgical pathology: Am. J. Surg. Pathol. 17 (12), pp. 1281-1288.