1. When to panic over abnormal values;GD Lundberg;MLO Med Lab,1972
2. International Organization for Standardization (2007) ISO 15189: 2007, Medical laboratories – Particular requirements for quality and competence. Available: http://www.iso.org Accessed 28 Apr, 2013.
3. College of American Pathologists (2010) Laboratory General Checklist [components GEN.41320, GEN.41330, and GEN.41340]. Available: http://www.cap.orgAccessed 28 Apr, 2013.
4. The Joint Commission. Accreditation Program (2012) Laboratory, 2012 National Patient Safety Goals (NPSG.02.03.01). Available: http://www.jointcommission.org/Accessed 28 Apr, 2013.
5. Chinese Medical Doctor Association (2009) Guide for implementation of patient safety goals (2009–2010 edition). Beijing: Science Press. (Book in Chinese).