Drug testing has become a major issue at international sports events such as the Olympics, particularly since the high-profile ban on Jamaican-born Canadian sprinter Ben Johnson, imposed after the Seoul Olympics in 1988.

• 像奥运会这样的国际体育赛事药物检查一直是个重大问题，特别是在引人注目的牙买加出生的加拿大短跑运动员本 - 约翰逊在1988年汉城奥运会后被禁赛之后。