41.   Two other athletes tested positive for banned substances during the recent world championships.

42.   Two other athletes tested positive for banned substances during world championships in Edmonton earlier this month.

43.   Younger athletes are now testing positive for banned substances, it said.

44.   Action at the track was clouded by reports that an unnamed England athlete had tested positive for a banned drug at the European Championships.

45.   All the athletes tested positive for dehydrotestosterone at the Games.

46.   After finding five baseball players using marijuana a decade ago, school athletes have tested drug free.

47.   All three athletes tested positive for banned endurance booster darbepoetin on the final day of competition and were promptly disqualified.

48.   BBC radio reported in Britain that a senior English athlete had tested positive for a banned drug during the European Championships in Helsinki.

49.   Then, in July the same year, the three athletes tested postive for amphetamine clenbuterol.

50.   Three other British athletes also tested positive.