title: Unreliable analysis of placebo analgesia in trials of placebo pain mechanisms.
authors.affiliation: The Nordic Cochrane Centre, Rigshospitalet, Department 7112, Biogdamswej 9, 2100 Copenhagen, Denmark.
authors.forename: Asbjørn
authors.initials: A
authors.lastname: Hróbjartsson
authors.forename: Peter C
authors.initials: PC
authors.lastname: Gøtzsche
mesh_terms: D000698:Analgesia / Q000379:methods*; D002986:Clinical Trials as Topic / Q000379:methods*; D006801:Humans; D059408:Pain Management; D015990:Placebo Effect