Chronic Pain — Evaluation of Effectiveness and Tolerability of Tapentadol Hydrochloride in Subjects With Severe Pain Due to Osteoarthritis Taking Either WHO Step I or Step II Analgesics or no Regular Analgesic
Citation(s)
An Evaluation of the Effectiveness and Tolerability of Tapentadol Hydrochloride Prolonged Release, and Tapentadol Hydrochloride Immediate Release on Demand, in Subjects With Uncontrolled Severe Chronic Pain Due to Osteoarthritis of the Knee Taking Either WHO Step I or Step II Analgesics or no Regular Analgesics.