Quality control in cytological screening for cervical cancer.
D000293:Adolescent; D000328:Adult; D000368:Aged; D002278:Carcinoma in Situ / Q000473:pathology / Q000517:prevention & control; D002294:Carcinoma, Squamous Cell / Q000473:pathology / Q000517:prevention & control; D003267:Contraception; D003951:Diagnostic Errors; D005260:Female; D006801:Humans; D008131:London; D008403:Mass Screening; D008875:Middle Aged; D011786:Quality Control; D002583:Uterine Cervical Neoplasms / Q000473:pathology / Q000517:prevention & control*; D014626:Vaginal Smears