Affiliation: | (1) Department of Pharmacodynamics, University of Illinois at Chicago, Box 6998, 60680 Chicago, IL, USA;(2) Illinois State Police, Suburban Chicago Forensic Laboratory, 1401 South Maybrook Drive, 60153 Maywood, IL, USA;(3) Illinois Racing Board, 100 W. Randolph, 60601 Chicago, IL, USA |