title: Covert pharmaceutical promotion in free medical journals.
authors.affiliation: Division of Pharmacoepidemiology and Pharmacoeconomics, Department ofMedicine, Brigham and Women's Hospital and Harvard Medical School, Boston, Mass, USA. akesselheim@partners.org
authors.forename: Aaron S
authors.initials: AS
authors.lastname: Kesselheim
mesh_terms: D000329:Advertising / Q000706:statistics & numerical data*; D002170:Canada; D004345:Drug Industry / Q000706:statistics & numerical data*; D006801:Humans; D010506:Periodicals as Topic / Q000191:economics*