COVID-19(14) Patient(7) stroke(5) SARS-COV-2 infection(5) Symptom(5) epilepsy(4) pathophysiology(4) Central nervous system(4) syndrome(4) coronavirus(4) Region(4) identification(3) tissue perfusion(3) COVID-19 infection(3) Brain mapping(3) olfactory dysfunction(3) reduced(3) paranasal(3) Saliva(3) olfactory(3) White matter(3) SARS-CoV-2(3) nasal(3) evaluate(3) Guillain-barrè syndrome(3) Anosmia(3) statistically significant(3) association(3) dysfunction(3) tissue(3)