title: Population ideals and sample realities--why we still need access to comprehensive information about populations.
authors.forename: Geraldine
authors.initials: G
authors.lastname: Barrett
authors.forename: Janet L
authors.initials: JL
authors.lastname: Peacock
mesh_terms: D003219:Confidentiality; D006302:Health Services Research; D006801:Humans; D007258:Informed Consent; D011159:Population Surveillance / Q000379:methods*; D011634:Public Health