PubMed:32105637 / 2261-2270
Annnotations
LitCovid-PAS-Enju
{"project":"LitCovid-PAS-Enju","denotations":[{"id":"EnjuParser_T491","span":{"begin":0,"end":9},"obj":"NN"}],"text":"evolution"}
LitCovid-TimeML
{"project":"LitCovid-TimeML","denotations":[{"id":"tok539","span":{"begin":0,"end":9},"obj":"NN"}],"text":"evolution"}