PubMed:32108351 / 645-650
Annnotations
LitCovid-PAS-Enju
{"project":"LitCovid-PAS-Enju","denotations":[{"id":"EnjuParser_T92","span":{"begin":0,"end":5},"obj":"DT"}],"text":"these"}
LitCovid-TimeML
{"project":"LitCovid-TimeML","denotations":[{"id":"tok110","span":{"begin":0,"end":5},"obj":"DT"}],"text":"these"}