title: In reply to Krabbe et al.
authors.affiliation: National Cancer Institute, BG 9609 RM 5E130 MSC 9789, 9609 Medical Center Dr, Bethesda, MD 20892-9789. Electronic address: izmirlig@mail.nih.gov.
authors.forename: Grant
authors.initials: G
authors.lastname: Izmirlian
authors.affiliation: Department of Engineering, Catholic University, 620 Michigan Ave., N.E., Washington DC 20064.
authors.forename: Jon
authors.initials: J
authors.lastname: Paciorek
mesh_terms: D005260:Female; D006801:Humans; D008297:Male; D001749:Urinary Bladder Neoplasms / Q000175:diagnosis* / Q000453:epidemiology*