8Linda T. kohn, Janet M. Corrigan, Mona S. Donaldson. To err is human : building a safer health sysytem [ M ]. Washington D. C : National Academy Press,2000 : 1.
9Alan Milbum. An organization with a memory: Repory of an expert group on learning from adverse in the NHS [R]. UK London: Department of Health, 2000:16.
10WHO. World alliance for patties safety forward programmer[ R]. Switzedanz :WHO, 2005.