PubMed:31995857 / 1261-1265
Annnotations
LitCovid-PAS-Enju
{"project":"LitCovid-PAS-Enju","denotations":[{"id":"EnjuParser_T224","span":{"begin":0,"end":4},"obj":"JJ"}],"text":"mean"}
LitCovid-TimeML
{"project":"LitCovid-TimeML","denotations":[{"id":"tok250","span":{"begin":0,"end":4},"obj":"JJ"}],"text":"mean"}