title: [Syphilitic chancre on the lip: an unusual location].
authors.forename: Ingrid
authors.initials: I
authors.lastname: Aguayo-Leiva
authors.forename: Sergio
authors.initials: S
authors.lastname: Vano-Galván
authors.forename: Pedro
authors.initials: P
authors.lastname: Jaén-Olasolo
authors.forename: Carmen
authors.initials: C
authors.lastname: Moreno
mesh_terms: D000328:Adult; D002601:Chancre / Q000175:diagnosis* / Q000635:transmission; D002613:Cheilitis / Q000175:diagnosis*; D016358:Contact Tracing; D018451:Homosexuality, Male; D006801:Humans; D008297:Male; D012725:Sexual Behavior; D013588:Syphilis Serodiagnosis