Danish cyclist Knud Enemark Jensen (1936 � 1960) before the start of the 100 kilometre team time trial at the Rome Olympics, 26th August 1960. During the race, Jensen collapsed with heat stroke and suffered a fractured skull, dying later in hospital. His body tested positive for the drugs amphetamine and Roniacol at a subsequent autopsy. (Photo by Keystone/Hulton Archive/Getty Images)
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