title: April 12, 1955--Tommy Francis and the Salk vaccine.
authors.affiliation: University of Michigan Medical School, Ann Arbor, USA.
authors.forename: Howard
authors.initials: H
authors.lastname: Markel
mesh_terms: D002986:Clinical Trials as Topic / Q000266:history*; D004311:Double-Blind Method; D004813:Epidemiology / Q000266:history; D049673:History, 20th Century; D006801:Humans; D011051:Poliomyelitis / Q000453:epidemiology / Q000266:history* / Q000517:prevention & control; D011054:Poliovirus Vaccine, Inactivated / Q000266:history*; D014481:United States
chemical_list: D011054:Poliovirus Vaccine, Inactivated