Error identification.
D001943:Breast Neoplasms / Q000175:diagnosis; D003937:Diagnosis, Differential; D003951:Diagnostic Errors; D005260:Female; D005770:Gastrointestinal Neoplasms / Q000175:diagnosis; D006689:Hodgkin Disease / Q000175:diagnosis; D006801:Humans; D009369:Neoplasms / Q000175:diagnosis* / Q000473:pathology / Q000601:surgery; D015588:Observer Variation; D011785:Quality Assurance, Health Care; D006113:United Kingdom; D014481:United States; D002583:Uterine Cervical Neoplasms / Q000175:diagnosis