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October 1937

An Index of Differential Diagnosis of Main Symptoms.

Arch Intern Med (Chic). 1937;60(4):733. doi:10.1001/archinte.1937.00180040169015

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Since this book is in its fifth edition, it is safe to say that it has filled a necessary place in the reference libraries of many physicians. If the diagnosis of disease is made easier by a thorough indexing of the symptoms, this book attains its purpose. For example, the symptom diarrhea is mentioned more than one hundred and fifty times in the index, but about ninety of these references are found on five pages. However, the rest of the references (approximately sixty) are scattered from pages 2 to 919. This is not the end of the cross-indexing of this symptom, for under "Abdomen, distention of" it is referred to as "hill diarrhea," and, finally, the symptom is last mentioned under "Zymotic diarrhea." As diarrhea is indexed, so are the other common symptoms of disease indexed. Furthermore, there is no differentiation between the terms "symptom" and "sign." They are both

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