PT - JOURNAL ARTICLE AU - Cavill, IAJ TI - Quality Control and Assurance in Clinical Laboratories: Three Years On AID - 10.1136/jcp.42.2.221-d DP - 1989 Feb 01 TA - Journal of Clinical Pathology PG - 221--221 VI - 42 IP - 2 4099 - http://jcp.bmj.com/content/42/2/221.4.short 4100 - http://jcp.bmj.com/content/42/2/221.4.full SO - J Clin Pathol1989 Feb 01; 42