title: 'Oh, Come All Ye Faithful': acquiring and maintaining a cohort.
authors.forename: D
authors.initials: D
authors.lastname: Isenberg
authors.forename: M
authors.initials: M
authors.lastname: Ehrenstein
authors.forename: A
authors.initials: A
authors.lastname: Rahman
mesh_terms: D000553:Ambulatory Care / Q000379:methods*; D015988:Cohort Effect; D003955:Diagnostic Tests, Routine; D006801:Humans; D015994:Incidence; D008180:Lupus Erythematosus, Systemic / Q000453:epidemiology* / Q000628:therapy*; D008991:Monitoring, Physiologic / Q000379:methods*; D010044:Outpatient Clinics, Hospital / Q000592:standards* / Q000706:statistics & numerical data; D018570:Risk Assessment; D006113:United Kingdom / Q000453:epidemiology; D016526:Workload