1. Audit and necropsy;Underwood, J.C.E.; Cotton, D.W.K.; Stephenson, T.J.;Lancet,1989
2. WHO Euro Reports and Studies. External quality assessment of health laboratories,1981
3. Anonymous. Bull R Coll Pathol 1983;42:9.
4. Coil Pathol 1986; 56: 3-4. 5 [Editorial.] Workingfor Patients;R, Anonymous Bull,1989
5. Observer variability in histopathological reporting of cervical biopsy specimens;Robertson, A.J.; Anderson, J.M.; Beck, J.S.;J Clin Pathol,1989