2Hilton BA. Quantity and quality of patients' sleep and sleep disturbing factors in a respiratory intensive care[J]. Journal of Advanced Nursing, 1976,1: 453 - 468.
3Closs SJ. Assessment of sleep in hospital patients:A review of methods [J ]. Journal of Advanced Nursing, 1988,13:501 -510.
4De Boer MF, Pruyn JFA, Van Den Borne B, et al. Rehabilitation out comes of long- term survivors treated for head and neck cancer[J ]. Head Neck, 1995,17:503 - 515.
