title: Central pain modulation and scalp tenderness in frequent episodic tension-type headache.
authors.affiliation: From the School of Psychology, Murdoch University, Perth, Western Australia, Australia.
authors.forename: Peter D
authors.initials: PD
authors.lastname: Drummond
authors.affiliation: From the School of Psychology, Murdoch University, Perth, Western Australia, Australia.
authors.forename: Lone
authors.initials: L
authors.lastname: Knudsen