Association of lower dopaminetransporter levels with psychomotor impairment in methamphetamine abusers. - Volkow,N.D.; Chang,L.; Wang,G-J.; Fowler,J.S.; Leonido-Yee,M.; Franceshi,D.; Sedler,M.; Gatley,J.; Hitzemann,R.; Ding,Y-S.; Logan,J.; Wong,C.; et al. (Am J Psychiatry, 2001)