title: Classifying steroid as controlled substances suggested to decrease athletes' supply, but enforcement could be a major problem.
mesh_terms: D045930:Anabolic Agents; D004300:Doping in Sports / Q000517:prevention & control*; D004335:Drug and Narcotic Control / Q000379:methods*; D006801:Humans
chemical_list: D045930:Anabolic Agents