9Brennan T A, Sox C M, Burstin H R. Relation between negligent ad- verse events and the outcomes of medical-malpractice litigation[J]. N Engl J Med,1996,335:1963-1967.
10Leape L L, Brennan T A, Laird N, et ol. The nature of adverse events in hospitalized patients. Results of the Harvard Medical Practice Study Ⅱ[J]. N Engl J Med,1991,324:377-384.
