Headache: What to ask, how to examine, and what scales to use. Recommendations of the Spanish Society of Neurology's Headache Study Group - Gago-Veiga A; Camiña Muñiz J; García-Azorín D; González-Quintanilla V; Ordás C; Torres-Ferrus M; Santos-Lasaosa S; Viguera-Romero J; Pozo-Rosich P (Neurologia, 2022)