title: The elusive "false-positive" sputum and urine cytology.
authors.forename: W H
authors.initials: WH
authors.lastname: Kern
mesh_terms: D005189:False Positive Reactions; D006801:Humans; D009369:Neoplasms / Q000175:diagnosis* / Q000473:pathology; D013183:Sputum / Q000166:cytology*; D014556:Urine / Q000166:cytology*