PubMed:32141569 / 1107-1114
Annnotations
LitCovid-PAS-Enju
{"project":"LitCovid-PAS-Enju","denotations":[{"id":"EnjuParser_T183","span":{"begin":0,"end":7},"obj":"NNS"}],"text":"Studies"}
LitCovid-TimeML
{"project":"LitCovid-TimeML","denotations":[{"id":"tok210","span":{"begin":0,"end":7},"obj":"NNS"}],"text":"Studies"}