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				 Cheronova initially finished fourth in Beijing but was 
				upgraded to bronze after Ukraine's Liudmyla Blonska tested 
				positive in 2008. Britain's Kelly Sotherton, originally fifth, 
				is now in line to be promoted to the bronze medal position. 
				 
				More than 100 athletes have had positive results in re-tests of 
				samples taken during the London 2012 and Beijing 2008 Olympics 
				conducted by the IOC. 
				 
				The re-testing program is part of the IOC's efforts to catch 
				cheats using newer testing methods or looking for substances 
				that were not known at the time of past Olympics, and to prevent 
				them from competing in future Games. 
				 
				Samples are stored for a decade, and for the 2008 and 2012 
				re-tests Russia has had the most positive cases per nation. 
				 
				(Reporting by Karolos Grohmann, editing by Mitch Phillips) 
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