title: The placebo enigma.
authors.forename: J M
authors.initials: JM
authors.lastname: Pearce
mesh_terms: D014151:Anti-Anxiety Agents; D001294:Attitude to Health; D003213:Conditioning, Psychological; D006801:Humans; D018847:Opioid Peptides / Q000502:physiology; D059408:Pain Management; D015990:Placebo Effect; D010919:Placebos / Q000494:pharmacology* / Q000627:therapeutic use
chemical_list: D014151:Anti-Anxiety Agents; D018847:Opioid Peptides; D010919:Placebos