PT - JOURNAL ARTICLE AU - A Herbert TI - Is proficiency testing in cervical cytology proficient? AID - 10.1136/jcp.50.7.536 DP - 1997 Jul 01 TA - Journal of Clinical Pathology PG - 536--537 VI - 50 IP - 7 4099 - http://jcp.bmj.com/content/50/7/536.short 4100 - http://jcp.bmj.com/content/50/7/536.full SO - J Clin Pathol1997 Jul 01; 50