title: Separate mechanisms for placebo and opiate analgesia?
authors.affiliation: Department of Psychology, Columbia University, USA Department of Psychology and Neuroscience, UCB 345, University of Colorado, Boulder, CO 80309-0345, USA.
authors.forename: T D
authors.initials: TD
authors.lastname: Wager
authors.forename: Mathieu
authors.initials: M
authors.lastname: Roy