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Inclusion/exclusion criteria presented in order of application.
| Inclusion criteria | Exclusion criterion |
|---|---|
| Articles in English | Non-English language articles |
| Biosensors using nanostructures | Short communications, reviews and thesis |
| Biosensors and coronavirus detection | Biosensors that do not employ nanomaterials |
| Immunosensors using nanostructures | Biosensors that were not applied for coronavirus detection |
| Nanostructures functionalized with aptasensors | – |
| Genosensor using nanostructures | – |
