In the paper Gamma A, et al., 3, 4-Methylenedioxymethamphetamine (MDMA) Modulates Cortical and Limbic Brain Activity as measured by [H215O]-PET in Healthy Humans. Neuropsychopharmacology. 23:388–395, 2000, the author list is incorrect. Here is the correct author list.

Alex Gamma, Ph.D., Alfred Buck, M.D., Thomas Berthold, Matthias E. Liechti, M.D., and Franz X. Vollenweider, M.D.