Re: "Randomized vs. historical clinical trials: are the benefits worth the cost?".  [electronic resource] 

 -  American journal of epidemiology  Aug 1986 
 - 338-41 p.  digital 
<br/><br/> Publication Type: Letter 
<br/><br/><label>ISSN: </label>0002-9262 
<br/><br/><label>Standard No.: </label>10.1093/oxfordjournals.aje.a114394  doi 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Clinical Trials as Topic--economics<br/>Cost-Benefit Analysis<br/>Humans<br/>Random Allocation