1 Novel Psychoactive Substance Unit, Centre for Clinical & Health Research Services, School of Life and Medical Sciences, University of Hertfordshire, Hatfield, UK.
2 Department of Psychology, University of Swansea, Swansea, UK.
3 Centre for Human Psychopharmacology, Swinburne University, Melbourne, Australia.
4 Department of Clinical Psychology and Addiction, Institute of Psychology, Eötvös Loránd University, Budapest, Hungary.