"Richard ("Dick") B Hoffman (1937-2011) and Leo George Rigler (1896-1979 4), American radiologists, described their eponymous sign in a paper in 1965 3."
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In a biographical citation, the name should be formatted correctly: '<strong>Richard ("Dick") B Hoffman</strong> (1937-2011) and <strong>Leo George Rigler</strong> (1896'