Foley K M. Pain assessment and cancer pain syndromes. In: Doyle D, Hanks GWC, MacDonald N eds. Oxford textbook of palliative medicine, 2nd edition. Oxford: Oxford University Press, 1998: 310–331.
2.
De Conno F, Caraceni A, Gamba A et al. Pain measurement in cancer patients: a comparison of six methods. Pain1994; 57: 161–166.
3.
Bruera E, Fainsinger RL, Miller MJ, Kuehn N. The assessment of pain intensity in patients with cognitive failure: a preliminary report. J Pain Symptom Manage1992; 7: 267–270.
4.
Grossman SA, Sheidler VR, Swedeen K, Mucenski J, Piantadosi S. Correlation of patient and caregiver ratings of cancer pain. J Pain Symptom Manage1991; 6: 53–57.
5.
Nekolaichuk CL, Bruera E, Spachynski K, MacEachern T, Maguire TO. A comparison of patient and proxy symptom assessments in advanced cancer patients. Palliat Med1999; 13: 311–323.
6.
Jensen M P, Karoly P, Braver S. The measurement of clinical pain intensity: a comparison of six methods. Pain1986; 27: 117–126.
7.
Begg C, Carbone P. Clinical trials and drug toxicity in the elderly: the experience of the Eastern Cooperative Oncology Group. Cancer1983; 52: 1986–1992.