1. Diagnostic and Statistical Manual of Mental Disorders;American Psychiatric Association,1994
2. Ecstasy use among club rave attendees;Arria;Arch. Pediatr. Adolesc. Med.,2002
3. Chemical analysis of ecstasy tablets;Baggott;JAMA,2000
4. Patterns of simultaneous polysubstance abuse in Canadian rave attendees;Barrett;Subst. Use Misuse,2005
5. Bureau of Forensic Services, 2005. State of California, Office of the Attorney General. An Introduction to Gas Chromatography/Mass Spectrometry (GC/MS). Available from: http://caag.state.ca.us/bfs/toxlab/gcms.htm (accessed September 19, 2005).