Radcliffe has often made comments about drugs in sport. Radcliffe backed the IAAF after Olga Yegorova was caught using drugs. Radcliffe and team-mate Hayley Tullett caused trouble in the heats of the 5,000 metres at the 2001 World Athletics Championships. They held up a sign protesting against Yegorova. Yegorova had been caught using, EPO, but was allowed to race. The sign was made by Radcliffe's husband and said 'EPO Cheats Out'. It was taken off them by the stadium officials. But not before it was seen on television. Team mates Kathy Butler and Hayley Yelling also demonstrated in the final. They were seen wearing Radcliffe masks and held up signs, one of which said 'Free Paula'. Radcliffe said after the Championships that she would continue her fight against drugs in sport. Radcliffe wears a red ribbon when racing to show her support for blood testing as a method of catching drugs cheats. Radcliffe first wore the ribbon at the 1999 European Cup. This was encouraged by Blandine Bitzner-Ducret. At the end of 2001 Radcliffe was given the choice not to race against Yegorova in televised meetings in the United Kingdom.