8Kastanos N, Estopa MR, Mann PA, et al. Laryngotracheal injury due to endotracheal intubation : incidence, evolution, and predisposing factors, Along-term study [ J ]. Critical Care Medicine, 1983,11 : 362-367.
9Rumbak MJ Walsh FW, Anderson WM, et al. Significant tracheal ob- struction causing failure to wean in patients requiring prolonged me- chanical ventilatin: a forgotten complication of longterm mechanical ventlation [ J ]. Chest, 1999,115 : 1092-1095.