PMC:7600245 / 104-346 5 Projects
Annnotations
| Id | Subject | Object | Predicate | Lexical cue |
|---|---|---|---|---|
| T3 | 18-26 | Sentence | denotes | Abstract |
| T4 | 27-136 | Sentence | denotes | The coronavirus disease-2019 (COVID-19) pandemic continues to challenge health care systems around the world. |