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To the Editor:—
I will take the liberty of commenting on both letters together. They are similar in so many respects that they almost seem to have been written by the same person. Many of the points raised are matters of opinion, and I fear it will not be possible to provide evidence which would satisfy persons with the strong antisupervoltage bias reflected in these letters. The fact that neither of these physicians confines his practice to radiotherapy may have had an effect on their opinions on this subject.Dr. Macdonald refers to the lack of statistical proof that supervoltage is more effective than conventional voltage in the primary control of certain types of cancer. He cites the Highland Park meeting of 1957, the proceedings of which I edited, in support of this statement. The purpose of my citation of the Fletcher article, however, was precisely that it furnished valid
Kaplan HS. RADIOTHERAPY OF MALIGNANT DISEASE-Reply. JAMA. 1960;172(3):267-268. doi:10.1001/jama.1960.03020030060021