There's growing calls for transparency and clarity around anti-doping processes.

This comes after the revelation that the World Anti-Doping Agency cleared 23 Chinese swimmers to compete at the Tokyo Olympics in 2021, despite testing positive for a banned substance.

Former World Anti-Doping Agency director general David Howman says aspects of this don't pass the 'smell test'.

"They could be better in terms of disclosure, be transparent and they should provide more clarity as to the actual process that was followed." 

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