PMC:7784824 / 1533-1701 2 Projects
Annnotations
| Id | Subject | Object | Predicate | Lexical cue |
|---|---|---|---|---|
| T23 | 36-47 | Sentence | denotes | Conclusion: |
| T24 | 48-165 | Sentence | denotes | Sensitivity of COVID-19 serological diagnosis was variable but consistently increased at >7 days after symptom onset. |