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Study population inclusion and exclusion flow chart. GNID, gram negative intracellular diplococci; QNS, quantity not sufficient; CT, Chlamydia trachomatis; MG, Mycoplasma genitalium; NAAT, nucleic acid amplification testing; NG, Neisseria gonorrhoeae; NGU, non-gonococcal urethritis; PMN/HPF, polymorphonuclear leucocytes per high-power field; TV, Trichomonas vaginalis; UU, Ureaplasma urealyticum.
