PubMed:32118640 / 1075-1084
Annnotations
LitCovid-PAS-Enju
{"project":"LitCovid-PAS-Enju","denotations":[{"id":"EnjuParser_T164","span":{"begin":0,"end":9},"obj":"NNS"}],"text":"variables"}
LitCovid-TimeML
{"project":"LitCovid-TimeML","denotations":[{"id":"tok181","span":{"begin":0,"end":9},"obj":"NNS"}],"text":"variables"}