PubMed:32083638 / 489-493
Annnotations
LitCovid-PAS-Enju
{"project":"LitCovid-PAS-Enju","denotations":[{"id":"EnjuParser_T71","span":{"begin":0,"end":4},"obj":"NN"}],"text":"mass"}
LitCovid-TimeML
{"project":"LitCovid-TimeML","denotations":[{"id":"tok89","span":{"begin":0,"end":4},"obj":"NN"}],"text":"mass"}