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JAMA. 1938;111(4):311-316. doi:10.1001/jama.1938.72790300002008.
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To write another article on the subject of ultraviolet therapy would seem, at first sight, to be quite inexcusable. There are few subjects on which more papers have been published, few subjects more ably covered in articles of review, and, one might add, no subject more capable of reducing to utter despair an author faced with the necessity of saying something new. My excuse for a repetition of this oft-told tale is the advisability of keeping before the medical profession subjects of medical interest and importance, and also the fact that with a growing literature new observations emerge which need to be linked with antecedent fact.

Since the last series of these articles appeared in 1932, the developments of the subject, as will be explained later, are mainly concerned with the extension of radiation therapy to diseases other than rickets and tetany, and to the somewhat conflicting observations as to


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