title: Are placebo-controlled trials ethical in areas where current guidelines recommend therapy? Yes.
authors.affiliation: Vascular Medicine Group, Vascular Department, King's College Hospital, London, UK. alexander.cohen@kcl.ac.uk
authors.forename: A T
authors.initials: AT
authors.lastname: Cohen
authors.forename: L M A
authors.initials: LM
authors.lastname: Maillardet
mesh_terms: D000925:Anticoagulants / Q000627:therapeutic use*; D002986:Clinical Trials as Topic; D032984:Ethics, Research; D000077425:Fondaparinux; D017408:Guidelines as Topic; D006801:Humans; D010919:Placebos; D011134:Polysaccharides / Q000627:therapeutic use*; D012107:Research Design; D013923:Thromboembolism / Q000188:drug therapy*; D020246:Venous Thrombosis / Q000188:drug therapy*
chemical_list: D000925:Anticoagulants; D010919:Placebos; D011134:Polysaccharides; D000077425:Fondaparinux