title: Use of placebo in studies of postoperative vomiting is unethical.
authors.forename: A K
authors.initials: AK
authors.lastname: Adams
mesh_terms: D030881:Disclosure; D035081:Editorial Policies; D004992:Ethics, Medical; D006801:Humans; D010919:Placebos; D011183:Postoperative Complications / Q000517:prevention & control*; D014839:Vomiting / Q000517:prevention & control*
chemical_list: D010919:Placebos