Explainer | Chinese doping report: what drugs were involved, what did Wada say, what next?
The revelation 23 Chinese swimmers tested positive for a performance-enhancing drug before the Tokyo Olympics has sparked a row over who knew, when they knew and what happens next.
- Reports last week revealed 23 Chinese swimmers failed a drugs test before the Tokyo Olympics, but were cleared in secret
- World Anti-Doping Agency chiefs confirmed they knew about the incident, sparking fury from some quarters