PubMed:31996494 / 170-179
Annnotations
LitCovid-PAS-Enju
{"project":"LitCovid-PAS-Enju","denotations":[{"id":"EnjuParser_T33","span":{"begin":2,"end":4},"obj":"CD"}],"text":"n 25 prov"}
LitCovid-TimeML
{"project":"LitCovid-TimeML","denotations":[{"id":"tok43","span":{"begin":2,"end":4},"obj":"CD"}],"text":"n 25 prov"}