Steigerwald, Ilona <br/><br/>
Effectiveness and safety of tapentadol prolonged release with tapentadol immediate release on-demand for the management of severe, chronic osteoarthritis-related knee pain: results of an open-label, phase 3b study.  [electronic resource] 

 -  Journal of pain research  2012 
 - 121-38 p.  digital 
<br/><br/> Publication Type: Journal Article 
<br/><br/><label>ISSN: </label>1178-7090 
<br/><br/><label>Standard No.: </label>10.2147/JPR.S30540  doi