title: Problems with the 'open-hidden' paradigm: the debate is still open and the answer is still hidden. Comment on Finniss and Benedetti (Pain 2005;114:3--6).
authors.forename: Luciana A C
authors.initials: LA
authors.lastname: Machado
mesh_terms: D002986:Clinical Trials as Topic; D006801:Humans; D010146:Pain / Q000523:psychology*; D015990:Placebo Effect