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Sir.—I read with great interest the article by Powazek and Billmeier entitled "Assessment of Intellectual Development after Surgery for Craniofacial Disorders" (Journal 133:151-153, 1979).
I have seen a number of cases of Crouzon's disease, including some with results that are similar to those the authors noted in their case report. There are, as the authors point out, a number of substantive variables that they have not measured. One variable, which in many ways may be one of the more important, is the hearing acuity of the affected patients and what interventions, either medical, surgical, or rehabilitative, may have been performed to optimize the hearing of each patient. It would be most important, if the authors have this data, if this could be made available.
ROBERT J. RUBEN. Crouzon's Disease Data. Am J Dis Child. 1980;134(8):801. doi:10.1001/archpedi.1980.02130200069025