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'''Dr. Jospeh C. Bloodgood''' was a surgical pathologist at Johns Hopkins University 1895-1932. He was the Author of the article "Cancer of the Tongue, A Preventable Disease" (1921). Joseph C. Bloodgood reviewed 15 benign pre-cancerous lesions of the lower lip and concluded that "smoking seems to be the most common etiological factor."[http://legacy.library.ucsf.edu/tid/eyy10e00]