4[1]Tesei F, Fameti G. Detection of deglutition disorders after reconstructive laryngectomy. clinical and radiological evaluations. Rev Laryngol Otol Rhinol Bord,1996,117(1):35～39.
5[2]Hartmann S. Diagnosis and therapy of dysphagia after partial horizontallaryngectomy. HNO, 1996,44(5): 258～263.
6Murray C J, Lopez AD. Alternative projections of mortality and disability by cause 1990 - 2020 : Global Burden of Disease Study. Lancet,1997,349 ( 9064 ) : 1498 - 1504.
7Dawn E, Elizabeth G , Andrew L, et al. Treatment of dyspnea in COPD: a controlled clinical trial of dyspnea management strategies.Chest, 1995,107 ( 3 ) :724 - 729.
