Fine, Perry G <br/><br/>
Slowly developing placebo responses confound tests of intravenous phentolamine to determine mechanisms underlying idiopathic chronic low back pain.  [electronic resource] 

 -  Pain  Feb 1994 
 - 235-242 p.  digital 
<br/><br/> Publication Type: Clinical Trial; Journal Article; Randomized Controlled Trial; Research Support, Non-U.S. Gov't; Research Support, U.S. Gov't, P.H.S. 
<br/><br/><label>ISSN: </label>0304-3959 
<br/><br/><label>Standard No.: </label>10.1016/0304-3959(94)90099-X  doi 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Adult<br/>Female<br/>Humans<br/>Infusions, Intravenous<br/>Low Back Pain--drug therapy<br/>Male<br/>Pain Measurement<br/>Phentolamine--administration & dosage<br/>Placebos<br/>Research Design