Oscar Pistorius of South Africa comes out of the starting blocks during his men's 400 metres heat at the IAAF World Championships in Daegu in this August 28, 2011 file photo. Pistorius is due to be released on Friday after serving 10 months of a five-year sentence, in line with South Africa's custodial guidelines for non-dangerous prisoners. (Photo by Max Rossi/Reuters)
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