quality control qualitative qc delta checks accreditation bulls algorithm random duplicate testing control chart establishing qc ranges quantitative lab testing common terminology 2012 summary of iso 15189 quality in healthcare customers perception core values definition evolution roadmap to quality quality management tools process maps moving averages quality control material uplicate checking performance qualification operation qualification installation qualification qualification instrument method validation verification nabl bis iso 15189 gift ajay sam quality managemnt quality management 7 tools of quality brief iso story quality assurance profeciency testing and eqa calibraion
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