11.   Four U.S. swimmers from two decades ago may be getting Olympic gold medals that authorities believe were lost to drug use by East German athletes.

12.   Investigations have been hampered by the unwillingness of most of the athletes to admit to drug use today.

13.   R for disturbing violent images, language, sexual content and some drug use.

14.   The test results appeared to confirm accusations by Western swimmers and coaches that the phenomenal Chinese performance was due to drug use.

15.   There, preliminary evidence shows that infection is at a relatively low level but risky behavior, both drug use and prostitution, may cause a spread.

16.   He said there was evidence many young people were turning to drug use rather than alcohol in order to dodge drink driving convictions.