Levin, Rona F <br/><br/>
Levels, grades, and strength of evidence: "What's it all about, Alfie?".  [electronic resource] 

 -  Research and theory for nursing practice  2014 
 - 5-8 p.  digital 
<br/><br/> Publication Type: Journal Article 
<br/><br/><label>ISSN: </label>1541-6577 
<br/><br/><label>Standard No.: </label>10.1891/1541-6577.28.1.5  doi 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Evidence-Based Nursing<br/>Nursing Research