Niels Ryberg Finsen

Finsen, Niels Ryberg (nēls rüˈbĕr fĭnˈsən) [key], 1860–1904, Danish physician. He established in Copenhagen an institute of light therapy and wrote several books on his work. He received the 1903 Nobel Prize in Physiology or Medicine for his method of treating disease, especially lupus vulgaris, with ultraviolet light.

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