1. Psychopharmacology, Drug Misuse & Novel Psychoactive Substances Research Unit, University of Hertfordshire, Hatfield AL10 9AB, UK
2. Department of Drug and Health Sciences, University of Catania, 95131 Catania, Italy
3. School of Clinical Pharmacology and Toxicology, University of Florence, 50121 Florence, Italy
4. Pharmacy, Medical School, The Grove Extension, Swansea University, Swansea SA2 8PP, UK