5Mcpherson C J, Wilson KG. Feeling like a burden:Exploring the perspectives of patients at the end of life [ J ]. Social Sci- ence &Medicine ,2007,64 ( 2 ) :417 - 427.
6Simmon LA. Self - Perceived Burden in cancer patients Val- idation of the self - perceived burden scale [J]. Cancer Nursing, 2007,30 ( 5 ) :405 - 411.
7Cousineau N, Mcdowell I. Measuring chronic patients" feel- ing of being a burden to their caregivers : Development and preliminary validation of a scale [ J ]. Med Care, 2003,41 : 110 - 118.
8Wilson KG, Chochinov HM. Desire for euthanasia or physi- cian - assisted suicide in palliative cancer care [ J ]. Health Psychol,2007,26 ( 3 ) : 314 - 323.
9Mcpherson CJ,Wilson KG. Feeling like a burden to others: a systematic review focusing on the end of life[ J]. Palliative Medicine ,2007,21 (10) : 115 - 128.
10Christine J, Mcpherson CJ. Family caregivers assessment of symptoms in patients with advanced cancer: Concordance with patients an factors affecting accuracy [ J ]. Journal of Pain and Symptom Management,2008,35( 1 ) :70 -82.