title: Editorial: Etiology of nongonococcal urethritis -- one piece in the puzzle.
mesh_terms: D002689:Chlamydia / Q000302:isolation & purification; D002690:Chlamydia Infections / Q000175:diagnosis; D003937:Diagnosis, Differential; D006069:Gonorrhea / Q000150:complications; D006801:Humans; D008297:Male; D009174:Mycoplasma / Q000302:isolation & purification; D009175:Mycoplasma Infections / Q000175:diagnosis; D012749:Sexually Transmitted Diseases / Q000209:etiology; D018139:Simplexvirus / Q000302:isolation & purification; D014526:Urethritis / Q000175:diagnosis / Q000209:etiology* / Q000382:microbiology