title: Authors' reply to Tabár and Kopans.
authors.affiliation: Department of Surgery, Leiden University Medical Centre, PO Box 9600, 2300 RC, Leiden, Netherlands.
authors.forename: Nienke A
authors.initials: NA
authors.lastname: de Glas
authors.affiliation: Department of Surgery, Leiden University Medical Centre, PO Box 9600, 2300 RC, Leiden, Netherlands G.J.Liefers@lumc.nl.
authors.forename: Gerrit-Jan
authors.initials: GJ
authors.lastname: Liefers
mesh_terms: D001943:Breast Neoplasms / Q000453:epidemiology* / Q000473:pathology*; D018270:Carcinoma, Ductal, Breast / Q000453:epidemiology* / Q000473:pathology*; D002285:Carcinoma, Intraductal, Noninfiltrating / Q000453:epidemiology* / Q000473:pathology*; D055088:Early Detection of Cancer / Q000639:trends*; D005260:Female; D006801:Humans