PubMed:32061066 / 1620-1625
Annnotations
LitCovid-PAS-Enju
{"project":"LitCovid-PAS-Enju","denotations":[{"id":"EnjuParser_T320","span":{"begin":0,"end":5},"obj":"JJ"}],"text":"upper"}
LitCovid-TimeML
{"project":"LitCovid-TimeML","denotations":[{"id":"tok363","span":{"begin":0,"end":5},"obj":"JJ"}],"text":"upper"}