title: Proficiency testing: error prevention and correction.
authors.affiliation: University of California, Davis Medical Center, Sacramento.
authors.forename: D C
authors.initials: DC
authors.lastname: O'Sullivan
mesh_terms: D002983:Clinical Competence; D019411:Clinical Laboratory Techniques / Q000592:standards; D004650:Employee Performance Appraisal; D005568:Forms and Records Control; D007755:Laboratories, Hospital / Q000458:organization & administration* / Q000592:standards; D017056:Medical Laboratory Personnel / Q000592:standards*; D011340:Problem Solving; D014481:United States