In the CBS interview, Hamilton -- who retired in 2009 after twice testing positive himself and who, earlier this month, was stripped of his 2004 gold medal by the International Olympic Committee due to doping -- said he first saw Armstrong use EPO in 1999.

CNN: August 21, 2012 -- Updated 0154 GMT (0954 HKT)

The evidence gathered by the U.S. Anti-Doping Agency of systematic drug use on his U.S. Postal Service cycling team was so overwhelming that Armstrong could look foolish and deluded if he insists to Oprah Winfrey that he rode clean, as he's always done until now.

NPR: Column: Live Commentary On Armstrong Interview

Mr. Armstrong was stripped of his titles last year after the U.S. Anti-Doping Agency, which polices drug use in American sports, initiated formal charges against him for allegedly conspiring to run an organized doping program aimed at dominating the Tour de France.

WSJ: Armstrong Is Sued Over Prize Money

The government said it planned to boost the powers of the Australian Sports Anti-Doping Authority and allocate more resources to investigating drug use.

WSJ: Australian Sports Probe Finds Endemic Cheating

The Phenome Centre will aim to use and develop the sensitive anti-doping facilities to analyse samples in a faster and more detailed manner than previously possible.

BBC: Legacy for anti-doping centre

According to World Anti-Doping Agency, Olympic athletes with medical conditions may apply for a therapeutic use exemption that would permit them to compete on medications that would be otherwise prohibited.

FORBES: Does Horse Racing Have A Better Drug Policy Than The Olympics?