PMC:7160614 / 5368-5519
Annnotations
LitCovid-sentences
| Id | Subject | Object | Predicate | Lexical cue |
|---|---|---|---|---|
| T48 | 0-151 | Sentence | denotes | Ethical approvals by the institutional review boards were obtained for this retrospective analysis, and the need to obtain informed consent was waived. |