Popkin, R J <br/><br/>
Patients' confusion from drug substitution.  [electronic resource] 

 -  JAMA  May 1979 
 - 1890 p.  digital 
<br/><br/> Publication Type: Letter 
<br/><br/><label>ISSN: </label>0098-7484 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Humans<br/>Therapeutic Equivalency