Headache during SARS-CoV-2 infection as an early symptom associated with mild inflammation and pulmonary disease: a retrospective cohort study - Gonzalez-Martinez, Alicia; Fanjul, Victor; Ramos, Carmen; Serrano Ballesteros, Jorge; Bustamante Vega, Marta; Villa-Marti, Almudena; Alvarez, Claudia; Garcia del Alamo, Yaiza; Vivancos, Jose; Beatriz Gago-Veiga, Ana (NEUROLOGY, 2021)