References
- Blumberg A. G., Cohen M., Heaton A. M., Klein D. F. Covert drug abuse among voluntary hospitalized psychiatric patients. JAMA 1971; 217: 1659–1661
- Einstein S., Quinones M. A. Difficulties in treating the drug abuser, Committee on Problems of Drug Dependence. National Academy of Sciences 1971; 2: 1450
- Goldstein A., Brown B. W. Urine testing schedules in methadone maintenance treatment of heroin addiction. JAMA 1970; 214: 311–315
- Heaton A. M., Blumberg A. G. Thin-layer chromatographic detection of barbiturates, narcotics and amphetamines in urine of patients receiving psychiatric drugs. J. Chromatog. 1969; 41: 367–370
- Mizner G. L., Barter J. T., Werme P. H. Patterns of drug abuse among college students-a preliminary report. Am. J. Psychlat. 1970; 127: 15–24
- Nowlis N. H. Current approaches to education on drugs, Committee on Problems of Drug Dependence. National Academy of Sciences, Washington, D.C. 1971; Vol. 1: 50
- Shearn C. R., Fitzgibbons D. J. Patterns of drug use in a population of youthful psychiatric patients. Am. J. Psychiat. 1972; 128: 11, 65–71