Journal of Pain and Symptom Management
Journal of Pain and Symptom Management > 2001 > 21 > 6 > 450-455
Journal of Pain and Symptom Management > 2001 > 22 > 1 > 591-599
Journal of Pain and Symptom Management > 2001 > 22 > 2 > 637-648
Journal of Pain and Symptom Management > 2001 > 22 > 5 > 931-937