PubMed:32026671 / 501-509
Annnotations
LitCovid-PAS-Enju
{"project":"LitCovid-PAS-Enju","denotations":[{"id":"EnjuParser_T77","span":{"begin":0,"end":8},"obj":"NNS"}],"text":"subjects"}
LitCovid-TimeML
{"project":"LitCovid-TimeML","denotations":[{"id":"tok84","span":{"begin":0,"end":8},"obj":"NNS"}],"text":"subjects"}