title: Misclassification of stages of syphilis.
authors.forename: Robert P
authors.initials: RP
authors.lastname: Kohn
authors.forename: Charlotte
authors.initials: C
authors.lastname: Kent
authors.forename: Jeffrey
authors.initials: J
authors.lastname: Klausner
mesh_terms: D006801:Humans; D011159:Population Surveillance; D013587:Syphilis / Q000145:classification*; D009626:Terminology as Topic