PubMed:32060789 / 306-307
Annnotations
LitCovid-PAS-Enju
{"project":"LitCovid-PAS-Enju","denotations":[{"id":"EnjuParser_T53","span":{"begin":0,"end":1},"obj":"DT"}],"text":"a"}
LitCovid-TimeML
{"project":"LitCovid-TimeML","denotations":[{"id":"tok56","span":{"begin":0,"end":1},"obj":"DT"}],"text":"a"}