The reality of psychomotor problems, and the possibility of Parkinson's disorder, in some recreational ecstasy/MDMA users: a rejoinder to Sumnall et al. (2003).
Parrott, A.C., Rodgers, J., Buchanan, T., Scholey, A.B., Heffernan, T. and Ling, J. 2004. The reality of psychomotor problems, and the possibility of Parkinson's disorder, in some recreational ecstasy/MDMA users: a rejoinder to Sumnall et al. (2003). Psychopharmacology. 171 (2), pp. 231-233. https://doi.org/10.1007/s00213-003-1599-3