Umbach, David M <br/><br/>
On the determination of sample size.  [electronic resource] 

 -  Epidemiology (Cambridge, Mass.)  Mar 2003 
 - 137-8 p.  digital 
<br/><br/> Publication Type: Comment; Journal Article 
<br/><br/><label>ISSN: </label>1044-3983 
<br/><br/><label>Standard No.: </label>10.1097/01.EDE.0000044327.46102.64  doi 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Environment<br/>Genetic Predisposition to Disease<br/>Humans<br/>Risk Factors<br/>Sample Size