title: A challenge to core beliefs.
authors.affiliation: Michigan State University, East Lansing, USA.
authors.forename: H
authors.initials: H
authors.lastname: Brody
authors.forename: D
authors.initials: D
authors.lastname: Weismantel
mesh_terms: D018849:Controlled Clinical Trials as Topic; D006801:Humans; D015201:Meta-Analysis as Topic; D019222:Mind-Body Relations, Metaphysical; D015990:Placebo Effect; D012107:Research Design