title: Seventy years ago in the Journal.
authors.affiliation: Department of Epidemiology, Johns Hopkins University School of Hygiene and Public Health, Baltimore, MD.
authors.forename: G W
authors.initials: GW
authors.lastname: Comstock
mesh_terms: D015142:Baltimore; D049673:History, 20th Century; D006801:Humans; D006920:Hygiene / Q000266:history*; D010506:Periodicals as Topic / Q000266:history*; D012106:Research / Q000266:history*; D012581:Schools, Public Health