sj-pdf-1-cep-10.1177_03331024221139239 - Supplemental material for Intra- and interindividual attack frequency variability of chronic cluster headache

Supplemental material, sj-pdf-1-cep-10.1177_03331024221139239 for Intra- and interindividual attack frequency variability of chronic cluster headache by Roemer B Brandt, Wim Mulleners, Leopoldine A Wilbrink, Paul Brandt, Erik W van Zwet, Frank JPM Huygen, Michel D Ferrari, Rolf Fronczek and for the ICON study group in Cephalalgia