E for Ecstasy by Nicholas Saunders
Appendix 1: Reference Section

69 The MDMA Neurotoxicity Controversy: Implications for Clinical Research, by Dr. Charles Grob

Grob says that investigations to establish neurotoxicity often contain flaws in methodology as well as in interpretation. Damage presumed to be caused by MDMA is surprisingly limited and is confounded by associated variables. Authorised use of MDMA in Switzerland is "without reports of adverse neuropsychiatric sequelae".

Cases of compulsive self-administration are very rare. MDMA is unique among recreational drugs in that there appears to be a disinclination to take it repeatedly. "We believe that a thorough yet dispassionate review of the existing data suggests that experimental use of MDMA in humans can be justified, " Grob says. But this should only take place in controlled therapeutic conditions.