1. Department of Emergency Medicine, University of Kentucky Hospital, Lexington, USA, KY
2. Department of Pharmacy Services , University of Kentucky Healthcare, Lexington, USA, KY
3. Clinical Toxicology and Environmental Biomonitoring Lab, University of California San Francisco (UCSF), San Francisco, USA, CA
4. Department of Emergency Medicine, University of Kentucky, Lexington, USA, KY
5. Diversion Control Division, Drug & Chemical Evaluation Section, Drug Enforcement Administration, Arlington, USA, VA