title: Commentary on Westergaard's "Definitions of medication-overuse headache in population-based studies and their implications on prevalence estimates: A systematic review".
authors.affiliation: David Geffen School of Medicine at UCLA, USA alanrapoport@gmail.com.
authors.forename: Alan M
authors.initials: AM
authors.lastname: Rapoport
authors.affiliation: Mount Sinai Medical Center, USA.
authors.forename: Chelsea A
authors.initials: CA
authors.lastname: Meskunas
authors.affiliation: Teva Pharmaceuticals, USA.
authors.forename: Marcelo E
authors.initials: ME
authors.lastname: Bigal
mesh_terms: D051271:Headache Disorders, Secondary / Q000139:chemically induced* / Q000453:epidemiology*; D006801:Humans