British cyclist Bradley Wiggins has defended his use of banned substances under medical exemption rules, saying he was not looking for "unfair advantage" but merely trying to mitigate the impact of asthma and allergies. The first Briton to win the Tour de France, Wiggins has been the subject of allegations of hypocrisy over the timing of the medical interventions since his anti-doping records were among those leaked by cyber hackers on the fancybear.net website. The data leaked relates to Therapeutic Use Exemptions (TUEs), which allow athletes to take banned substances for verified medical needs and are signed off by sports federations. More...