title: Asymptomatic Chlamydia trachomatis-negative non-gonococcal urethritis.
authors.forename: Colm
authors.initials: C
authors.lastname: O'Mahony
mesh_terms: D002690:Chlamydia Infections / Q000175:diagnosis*; D002692:Chlamydia trachomatis / Q000302:isolation & purification; D006801:Humans; D008297:Male; D013194:Staining and Labeling; D014526:Urethritis / Q000175:diagnosis* / Q000382:microbiology