P 17 Posttraumatic Headache – Pain Related Evoked Potentials (PREP) and Conditioned Pain Modulation (CPM) as possible biomarkers for identification of risk patients. - Jessen, J.; Özgül, Ö.; Forsting, J.; Höffken, O.; Schwenkreis, P.; Tegenthoff, M.; Enax-Krumova, E. (Clinical Neurophysiology, 2022)