title: A puzzling omission in a great medical textbook edited by a pioneer of controlled trials.
authors.affiliation: Department of Epidemiology and Biostatistics, Case School of Medicine, Case Western Reserve University, Cleveland, OH 44106, USA. dvn@case.edu
authors.forename: Duncan
authors.initials: D
authors.lastname: Neuhauser
authors.forename: Mireya
authors.initials: M
authors.lastname: Diaz
authors.forename: I
authors.initials: I
authors.lastname: Chalmers
mesh_terms: D018849:Controlled Clinical Trials as Topic; D049673:History, 20th Century; D006801:Humans; D011018:Pneumonia, Pneumococcal / Q000517:prevention & control*; D013782:Textbooks as Topic / Q000266:history; D014611:Vaccination / Q000266:history*