title: On observer errors in pertussis vaccine studies.
authors.forename: J
authors.initials: J
authors.lastname: Taranger
authors.forename: B
authors.initials: B
authors.lastname: Trollfors
mesh_terms: D015982:Bias; D018849:Controlled Clinical Trials as Topic; D015721:Diphtheria-Tetanus-Pertussis Vaccine / Q000008:administration & dosage*; D006801:Humans; D015994:Incidence; D007223:Infant; D015588:Observer Variation; D010567:Pertussis Vaccine / Q000008:administration & dosage*; D013548:Sweden / Q000453:epidemiology; D014917:Whooping Cough / Q000453:epidemiology* / Q000517:prevention & control*
chemical_list: D015721:Diphtheria-Tetanus-Pertussis Vaccine; D010567:Pertussis Vaccine