Analgesic use: a predictor of chronic pain in medication overuse headache: the Head-HUNT study.
Sheftell
Fred D
FD
Tepper
Stewart J
SJ
Rapoport
Alan M
AM
D002140:California; D020773:Headache Disorders / Q000266:history*; D049673:History, 20th Century; D006801:Humans; D009462:Neurology / Q000266:history; D013557:Switzerland