Pierre-Charles-Alexandre Louis (1787-1872), French physician, clinician and pathologist known for his studies on tuberculosis, typhoid fever, and pneumonia. He developed the "numerical method," a forerunner to epidemiology and the modern clinical trial. Lithograph by Nicolas Eustache Maurin (1799-1850). Colorized.

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Photo credit: © Science History Images / Alamy / Afripics
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Model Released: No

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