title: The association between analgesic abuse and headache--coincidental or causal.
authors.forename: I
authors.initials: I
authors.lastname: Bowdler
authors.forename: J
authors.initials: J
authors.lastname: Kilian
mesh_terms: D000700:Analgesics; D006261:Headache / Q000139:chemically induced / Q000209:etiology*; D006801:Humans; D019966:Substance-Related Disorders / Q000150:complications*
chemical_list: D000700:Analgesics