title: Controversies in headache.
authors.forename: E P
authors.initials: EP
authors.lastname: Chronicle
authors.forename: W
authors.initials: W
authors.lastname: Mulleners
mesh_terms: D001921:Brain / Q000503:physiopathology; D004558:Electric Stimulation; D004594:Electrophysiology; D006801:Humans; D008280:Magnetics; D008881:Migraine Disorders / Q000503:physiopathology*; D010719:Phosphenes / Q000502:physiology*