title: Clinical quiz. A child with recurrent episodes of dark urine. Paroxysmal nocturnal hemoglobinuria.
authors.affiliation: University of Tennessee Health Science Center, Memphis, TN 38103, USA. klau@utmem.edu
authors.forename: Keith K
authors.initials: KK
authors.lastname: Lau
authors.forename: Bettina H
authors.initials: BH
authors.lastname: Ault
mesh_terms: D000293:Adolescent; D006417:Hematuria / Q000209:etiology*; D006457:Hemoglobinuria, Paroxysmal / Q000150:complications* / Q000175:diagnosis*; D006801:Humans; D008297:Male; D012008:Recurrence