PMC:7463108 / 4489-4706
Annnotations
LitCovid-PD-CLO
| Id | Subject | Object | Predicate | Lexical cue |
|---|---|---|---|---|
| T6401 | 56-59 | http://purl.obolibrary.org/obo/CLO_0051582 | denotes | has |
LitCovid-sentences
| Id | Subject | Object | Predicate | Lexical cue |
|---|---|---|---|---|
| T39 | 105-200 | Sentence | denotes | The first phase began in the late 1990s with an increase in the number of prescription opioids. |