Urine screening for drugs of abuse in urban adolescents.
Hoffman
R
R
D000293:Adolescent; D004219:District of Columbia / Q000453:epidemiology; D006801:Humans; D015813:Substance Abuse Detection; D019966:Substance-Related Disorders / Q000175:diagnosis / Q000453:epidemiology* / Q000652:urine; D014505:Urban Population