title: Missing patients in general practice; the computerised age-sex register.
authors.forename: N
authors.initials: N
authors.lastname: Kerse
authors.forename: F
authors.initials: F
authors.lastname: Clark
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D015982:Bias; D005194:Family Practice / Q000592:standards*; D005260:Female; D006801:Humans; D008297:Male; D016347:Medical Records Systems, Computerized / Q000592:standards*; D012042:Registries / Q000592:standards*