Chan, T L H <br/><br/>
Exploring naturally occurring clinical subgroups of post-traumatic headache.  [electronic resource] 

 -  The journal of headache and pain  Feb 2020 
 - 12 p.  digital 
<br/><br/> Publication Type: Journal Article 
<br/><br/><label>ISSN: </label>1129-2377 
<br/><br/><label>Standard No.: </label>10.1186/s10194-020-1080-2  doi 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Adult<br/>Cohort Studies<br/>Comorbidity<br/>Female<br/>Headache--classification<br/>Humans<br/>Male<br/>Middle Aged<br/>Migraine Disorders--epidemiology<br/>Post-Traumatic Headache--classification<br/>Retrospective Studies<br/>Stress Disorders, Post-Traumatic--epidemiology