1. Efficacy of Analgesics in Chronic Pain
Rachel B. Sheather-Reid, BSc, PLD, Milton L. Cohen, MD, FRACP, FAFRM 
Journal of Pain and Symptom Management 
Volume 15, Issue 4, Pages (April 1998)
DOI: /S (98)

2. Fig. 1.
Morning and evening pain ratings (top) and hours of uptime and sleep (bottom) for cervicobrachial pain 1
Journal of Pain and Symptom Management  , DOI: ( /S (98) )

3. Fig. 2.
Morning and evening pain ratings (top) and hours of uptime and sleep (bottom) for cervicobrachial pain 2
Journal of Pain and Symptom Management  , DOI: ( /S (98) )

4. Fig. 3.
Morning and evening pain ratings (top) and hours of uptime and sleep (bottom) for cervicobrachial pain 3
Journal of Pain and Symptom Management  , DOI: ( /S (98) )

5. Fig. 4.
Morning and evening pain ratings (top) and hours of uptime and sleep (bottom) for cervicobrachial pain 4
Journal of Pain and Symptom Management  , DOI: ( /S (98) )

6. Fig. 5.
Morning and evening pain ratings (top) and hours of uptime and sleep (bottom) for cervicobrachial pain 5
Journal of Pain and Symptom Management  , DOI: ( /S (98) )