title: The placebo effect: an unpopular topic.
authors.affiliation: University College Londen, London WC1E 6BT UK.
authors.forename: Patrick D
authors.initials: PD
authors.lastname: Wall
mesh_terms: D003214:Conditioning, Classical; D006801:Humans; D015990:Placebo Effect; D010919:Placebos; D012107:Research Design
chemical_list: D010919:Placebos