My sources

http://www.justice.gov/dea/concern/steroids.html#1

http://www.npr.org/templates/story/story.php?storyId=18299098

http://muscle.ucsd.edu/musintro/steroids.shtml

http://www.justice.gov/ndic/pubs5/5448/#illegal

http://www.drugabuse.gov/ResearchReports/Steroids/anabolicsteroids2.html#anchor