title: Commentary: confronting unexpected results: Edmund Parkes reviews John Snow.
authors.affiliation: Program in the History of Medicine, University of Minnesota, 4609 Gustafson Dr., Gig Harbor, WA, 98335, USA. eyler001@umn.edu.
authors.forename: John
authors.initials: J
authors.lastname: Eyler
mesh_terms: D002771:Cholera / Q000635:transmission*; D004196:Disease Outbreaks; D006801:Humans