PubMed:32172226 / 1566-1573
Annnotations
LitCovid-PAS-Enju
{"project":"LitCovid-PAS-Enju","denotations":[{"id":"EnjuParser_T247","span":{"begin":0,"end":7},"obj":"JJ"}],"text":"helpful"}
LitCovid-TimeML
{"project":"LitCovid-TimeML","denotations":[{"id":"tok278","span":{"begin":0,"end":7},"obj":"JJ"}],"text":"helpful"}