PubMed:32026671 / 2125-2131
Annnotations
LitCovid-PAS-Enju
{"project":"LitCovid-PAS-Enju","denotations":[{"id":"EnjuParser_T365","span":{"begin":0,"end":6},"obj":"NNS"}],"text":"levels"}
LitCovid-TimeML
{"project":"LitCovid-TimeML","denotations":[{"id":"tok398","span":{"begin":0,"end":6},"obj":"NNS"}],"text":"levels"}