2[2]Maloney CM,Kesner RK,Klein G,et al. The rectal administration of MS contin: clinical implications. of use in end stage cancer[J]. The American Journal of Hospice Care,1989,6: 34-35
3Foley KM, Portenoy R K. World Health Organization-International Association for the Study of Pain:joint initiatives in Cancer Pain Relief. J Pain Symptom Manage, 1993,8 ( 6 ) : 335-339.
4Rashidi A A, Anis AH, Marra CA. Do visual analogue scale (VAS) derived standard gamble (SG) utilities agree with Health Utilities Index utilities? A comparison of patient and community preferences for health status in rheumatoid arthritis patients. Health Qual Life Outcomes,2006,4( 1 ) :25.