title: Zinc lozenges and vitamin C for the common cold are not examples of placebo effect in action.
authors.affiliation: Department of Public Health, University of Helsinki, POB 41, Mannerheimintie 172, Helsinki FIN-00014, Finland. Electronic address: harri.hemila@helsinki.fi.
authors.forename: Harri
authors.initials: H
authors.lastname: Hemilä
mesh_terms: D030881:Disclosure; D006801:Humans; D011642:Publications / Q000592:standards*; D016032:Randomized Controlled Trials as Topic / Q000379:methods*