title: The use of a placebo in vaccine trials.
authors: Faculty of Infectious and Tropical Diseases, London School of Hygiene & Tropical Medicine, London WC1E 7HT, UK. Electronic address: brian.greenwood@lshtm.ac.uk.
authors: Brian
authors: B
authors: Greenwood
mesh_terms: D002986:Clinical Trials as Topic / Q000379:methods*; D019049:Developed Countries; D006801:Humans; D007223:Infant; D010919:Placebos; D014612:Vaccines
chemical_list: D010919:Placebos; D014612:Vaccines