title: Sigma metric or defects per million opportunities (DPMO): the performance of clinical laboratories should be evaluated by the Sigma metrics at decimal level with DPMOs.
authors.forename: Abdurrahman
authors.initials: A
authors.lastname: Coskun
authors.forename: Wytze P
authors.initials: WP
authors.lastname: Oosterhuis
authors.forename: Mustafa
authors.initials: M
authors.lastname: Serteser
authors.forename: Ibrahim
authors.initials: I
authors.lastname: Unsal
mesh_terms: D064790:Clinical Laboratory Services; D006801:Humans; D011786:Quality Control; D017749:Total Quality Management