Chronic headaches after traumatic brain injury: Diagnostic complexity associated with increased cost.

McGeary D, Swan AA, Kennedy E, Dismuke-Greer CE, McGeary C, Sico JJ, Amuan ME, Manhapra A, Bouldin ED, Watson P, Kenney K, Myers M, Werner JK, Mitchell JL, Carlson K, Delgado R, Esmaeili A, Pugh MJ.