The role of headache chronicity among predictors contributing to quality of life in patients with migraine: A hospital-based studyKim, S YPark, S PAuthor informationJ Headache Pain.2014;15:68. doi: 10.1186/1129-2377-15-68.Headache 55(4):p 585, April 2015.Copyright © 2015 John Wiley & Sons, Ltd