title: Exploring the use of the sham design for interventional trials: implications for endoscopic research.
authors.affiliation: Birmingham, Alabama, USA.
authors.forename: C Mel
authors.initials: CM
authors.lastname: Wilcox
mesh_terms: D002986:Clinical Trials as Topic / Q000592:standards*; D016099:Endoscopy, Gastrointestinal; D032984:Ethics, Research; D006801:Humans; D010919:Placebos / Q000592:standards; D012107:Research Design / Q000592:standards*
chemical_list: D010919:Placebos