Random urine drug testing.
Brock
Margaret F
MF
Roy
Raymond C
RC
D000776:Anesthesiology; D006801:Humans; D007396:Internship and Residency; D010820:Physicians; D015813:Substance Abuse Detection; D019966:Substance-Related Disorders / Q000175:diagnosis* / Q000517:prevention & control / Q000523:psychology