National, Regional, and State Trends in Workplace Urine Drug Testing Results From a Medical Review Officer Data Source, 2003-2005

Baylor, Michael R., Cary NC; von Brand, Andrew T., Bethesda MD; Ferguson, James L., Minneapolis MN; Stephenson, II, Robert L., Rockville MD; Cangianelli, Leo A., Bethesda MD; Mitchell, John M., Research Triangle Park NC; Walsh, J. Michael, Bethany Beach DE; Bush, Donna M., Laurel MD; Flegel, Ron R., Rockville MD