PubMed:32081569 / 643-644
Annnotations
LitCovid-PAS-Enju
{"project":"LitCovid-PAS-Enju","denotations":[{"id":"EnjuParser_T100","span":{"begin":0,"end":1},"obj":"POS"}],"text":"'"}
LitCovid-TimeML
{"project":"LitCovid-TimeML","denotations":[{"id":"tok108","span":{"begin":0,"end":1},"obj":"POS"}],"text":"'"}