Ernst, Dennis J <br/><br/>
Take the guesswork out of venipunctures.  [electronic resource] 

 -  MLO: medical laboratory observer  Apr 2009 
 - 18, 20-1 p.  digital 
<br/><br/> Publication Type: Journal Article 
<br/><br/><label>ISSN: </label>0580-7247 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Humans<br/>Phlebotomy--instrumentation