@article {791,
	title = {Response to Hays et al and McHorney and Cohen: Practical implications of item response theory and computerized adaptive testing: A brief summary of ongoing studies of widely used headache impact scales},
	journal = {Medical Care},
	volume = {38},
	year = {2000},
	pages = {73-82},
	author = {Ware, J. E., Jr. and Bjorner, J. B. and Kosinski, M.}
}
