Zo stelde het Institute of Medicine op basis van twee baanbrekende studies (de Harvard Medical Practice Study en de Costs of medical injuries in Utah and Colorado) : « at least 44 000, and perhaps 98 000, Americans die in hospital each year as a result of medical errors».
C'est ce qu'indique l'Institute of Medicine, sur la base de deux études innovatrices (Harvard Medical Practice Study et Costs of medical injuries in Utah and Colorado) : « at least 44 000, and perhaps 98 000, Americans die in hospital each year as a resuit of medical errors».