Special Feature.  [electronic resource] 

 -  Journal of periodontology  Jan 2004 
 - 3 p.  digital 
<br/><br/> Publication Type: Journal Article 
<br/><br/><label>ISSN: </label>1943-3670 
<br/><br/><label>Standard No.: </label>10.1902/jop.2004.75.1.3  doi