1. Department of Pharmacology; Temple University School of Medicine; Philadelphia PA USA
2. Center for Substance Abuse Research; Temple University School of Medicine; Philadelphia PA USA
3. Designer Drug Research Unit of the Intramural Research Program; National Institute on Drug Abuse, National Institutes of Health; Baltimore MD USA
4. Department of Pharmacology and Toxicology; Virginia Commonwealth University; Richmond VA USA
5. Fox Chase Chemical Diversity Center Inc.; Doylestown PA USA
6. Department of Psychology; Western Michigan University; Kalamazoo MI USA