6Kohn LT,Corrigan JM, Donaldson AMS, et al. To err is human j building a safer health system[M], Washington,DC: The National Academies Press, 2000.
7Baker GR. Harvard medical practice study[J], Qual Saf Health Care, 2004' 13: 151-152.
8Brennan TA*Leape LL? Laird NM,et al. Incidence of adverse events and negligence in hospitalized patients: results of the Harvard Medical Practice Study I [J]. Qual Saf Health Care, 2004,13: 145-151.
9Naessens JM, Huschka TR. Distinguishing hospital complications of care from pre-existing conditions[J]. Int J Qual Health Care,2004,16(Suppl l):i27-35.
10Jackson TJ, Michel JL,Roberts RF, et al. A classification of hospital-acquired diagnoses for use with routine hospital data [J]. MJA, 2009, 191(10): 544-548.