van der Heijde, D M <br/><br/>
Disease activity score.  [electronic resource] 

 -  Annals of the rheumatic diseases  Jan 1992 
 - 140 p.  digital 
<br/><br/> Publication Type: Letter 
<br/><br/><label>ISSN: </label>0003-4967 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Arthritis, Rheumatoid--drug therapy<br/>Humans<br/>Severity of Illness Index