Unanswered mysteries in the death of Franklin D. Roosevelt.
D005197:Famous Persons; D005770:Gastrointestinal Neoplasms / Q000266:history* / Q000401:mortality / Q000556:secondary; D049672:History, 19th Century; D049673:History, 20th Century; D008545:Melanoma / Q000266:history*; D011057:Politics; D012878:Skin Neoplasms / Q000266:history*; D014481:United States