5Benor D E, Delbar V, Krulik T. Measuring impact of nursing intervention on cancer patients, ability to contml symptoms[J]. Cancer Nurs, 1998, 21(5): 320.
6Bredin M, ConerJ, Krishnasamy M, et al. Multicent rerandomsied controlled Trial of nursing intervention for breathlessness in patients with lung cancer[J].BMJ, 1999, 318: 901.