Von Korff, M <br/><br/>
Assessing headache severity. New directions.  [electronic resource] 

 -  Neurology  Jun 1994 
 - S40-6 p.  digital 
<br/><br/> Publication Type: Journal Article; Research Support, Non-U.S. Gov't; Research Support, U.S. Gov't, P.H.S. 
<br/><br/><label>ISSN: </label>0028-3878 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Headache--physiopathology<br/>Humans<br/>Pain Measurement<br/>Reproducibility of Results<br/>Severity of Illness Index