PubMed:32052466 / 292-303
Annnotations
LitCovid-PAS-Enju
{"project":"LitCovid-PAS-Enju","denotations":[{"id":"EnjuParser_T49","span":{"begin":0,"end":11},"obj":"JJ"}],"text":"alternative"}
LitCovid-TimeML
{"project":"LitCovid-TimeML","denotations":[{"id":"tok55","span":{"begin":0,"end":11},"obj":"JJ"}],"text":"alternative"}