PubMed:32150360 / 4134-4143
Annnotations
LitCovid-PAS-Enju
{"project":"LitCovid-PAS-Enju","denotations":[{"id":"EnjuParser_T696","span":{"begin":0,"end":9},"obj":"NN"}],"text":"evolution"}
LitCovid-TimeML
{"project":"LitCovid-TimeML","denotations":[{"id":"tok761","span":{"begin":0,"end":9},"obj":"NN"}],"text":"evolution"}