title: [Every 20th patient suffers from dyscalculia--life dependent on the calculator].
authors.forename: Peter
authors.initials: P
authors.lastname: Kupfer
mesh_terms: D000328:Adult; D002648:Child; D003201:Computers; D003430:Cross-Sectional Studies; D003937:Diagnosis, Differential; D005260:Female; D006801:Humans; D007859:Learning Disabilities / Q000175:diagnosis* / Q000453:epidemiology / Q000209:etiology; D008297:Male; D008433:Mathematics; D012307:Risk Factors