1. UF Health Springhill, University of Florida College of Medicine, 4037 NW 86th Terrace, Gainesville, FL 32606, USA
2. University of Florida College of Medicine, 1600 Sw Archer Road, Gainesville, FL 32610, USA
3. United States Drug Testing Laboratories, Inc., 1700 S Mount Prospect Road, Des Plaines, IL 60018, USA