title: Medication overuse headache: type I and type II.
authors.forename: J R
authors.initials: JR
authors.lastname: Saper
authors.forename: A E
authors.initials: AE
authors.lastname: Lake
mesh_terms: D000700:Analgesics / Q000009:adverse effects*; D051271:Headache Disorders, Secondary / Q000145:classification* / Q000523:psychology* / Q000628:therapy; D006801:Humans
chemical_list: D000700:Analgesics