PMC:4928686 / 13517-13519
Annnotations
2_test
{"project":"2_test","denotations":[{"id":"25788396-19384219-68933191","span":{"begin":0,"end":2},"obj":"19384219"},{"id":"25788396-19384219-68933191","span":{"begin":0,"end":2},"obj":"19384219"}],"text":"20"}