History, 20th Century |
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| 20th Cent. History (Medicine); 20th Cent. History of Medicine; 20th Cent. Medicine; Historical Events, 20th Century; History of Medicine, 20th Cent.; History, Twentieth Century; Medical History, 20th Cent.; Medicine, 20th Cent. | |
| Time period from 1901 through 2000 of the common era. | |