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Wednesday, February 19, 2020


Before the invention of the stethoscope in 1816 a doctor would listen to his patient's heart by placing his ear to the patient's bare chest.  A French doctor, who thought this approach was both awkward and of limited clinical value, used a rolled sheet of paper to create an aural tube that soon thereafter led to the stethoscope's invention.  [US National Library of Medicine]

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