RT Journal Article SR Electronic T1 False negative rate in cervical cytology. JF Journal of Clinical Pathology JO J Clin Pathol FD BMJ Publishing Group Ltd and Association of Clinical Pathologists SP 438 OP 442 DO 10.1136/jcp.40.4.438 VO 40 IS 4 A1 Y van der Graaf A1 G P Vooijs YR 1987 UL http://jcp.bmj.com/content/40/4/438.abstract AB Markup server — Error Error There was a problem handling your request. Please try again in a few minutes, or contact us if you continue to experience this problem.