PubMed:31991628 / 600-604
Annnotations
LitCovid-PAS-Enju
{"project":"LitCovid-PAS-Enju","denotations":[{"id":"EnjuParser_T109","span":{"begin":0,"end":4},"obj":"IN"}],"text":"than"}
LitCovid-TimeML
{"project":"LitCovid-TimeML","denotations":[{"id":"tok116","span":{"begin":0,"end":4},"obj":"IN"}],"text":"than"}