| The common cold in adults: Diagnosis and clinical features | Centers for Disease Control and Prevention |
|---|---|
| Anosmia in COVID-19: Underlying mechanisms and assessment of an olfactory route to brain infection | The common cold in adults: Treatment and prevention |
Key facts about influenza flu.
12| Centers for Disease Control and Prevention | Coronavirus disease 2019 COVID-19 : Frequently asked questions |
|---|---|
| Journal of Korean Medical Science |
Allergic rhinitis: Clinical manifestations, epidemiology, and diagnosis.
7