REFERENCES
- Clark , H. W. 1990 . The role of physicians as medical review officers in workplace drug testing programs: In pursuit of the last nanogram . Western Journal of Medicine , Vol. 152 ( 5 ) : 514 – 524 .
- NIDA . 1989 . Model Plan for a Comprehensive Drug Free Workplace Program. Rockville , Maryland : NIDA. .
- Osterloh , J. D. and Becker , C. E. 1990 . Chemical dependency and drug testing in the workplace . Western Journal of Medicine , Vol. 152 ( 5 ) : 506 – 513 .
- Smith , D. E. and Wesson , D. R. 1984 . “ Substance abuse in industry: Identification, intervention, treatment and prevention. ” . In Substance Abuse in the Workplace. Edited by: Smith , D. E. , Wesson , D. R. , Zerkin , E. L. and Novey , J. H. San Francisco : Haight-Ashbury Publications. .