Russian doctors and athletes ‘switched urine samples’ at Sochi Olympics

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This gives you some details regarding the alleged state-sanctioned doping scandal concerning Russia, in which we are told how athletes' urine samples were switched even as they were fed on a diet cocktail of drugs.....
Other than the relevance to sports questions, there is also the angle about the whistle-blower bringing to our awareness the 'dirty business' going on under the counter....and the media's role in bringing to light wrongdoings....