Relation between malpractice claims and adverse events due to negligence. Results of the Harvard Medical Practice Study III. - Localio,A.R.; Lawthers,A.G.; Brennan,T.A.; Laird,N.M.; Hebert,L.E.; Peterson,L.M.; Newhouse,J.P.; Weiler,P.C.; Hiatt,H.H. (N Engl J Med, 1991)