title: Prospective studies urged of health risks.
authors.forename: D
authors.initials: D
authors.lastname: Butler
mesh_terms: D000818:Animals; D005602:France / Q000453:epidemiology; D006801:Humans; D017096:Prion Diseases / Q000453:epidemiology; D011446:Prospective Studies; D012106:Research; D018570:Risk Assessment