5Mitsumoto H,Rabkin JG. Palliative care for patients with amyotrophic lateral sclerosis:"Prepare for the worst and hope for the best"[J]. JAMA, 2007,298(2) :207-216.
6WHO Expert Commitee. Cancer Pain Relief and palliative Care[J]. World Health Organ Tech Rep Ser, 1990,804:1-75.