PubMed:32149769 / 1783-1796
Annnotations
LitCovid-PAS-Enju
{"project":"LitCovid-PAS-Enju","denotations":[{"id":"EnjuParser_T265","span":{"begin":0,"end":13},"obj":"NN"}],"text":"concentration"}
LitCovid-TimeML
{"project":"LitCovid-TimeML","denotations":[{"id":"tok338","span":{"begin":0,"end":13},"obj":"NN"}],"text":"concentration"}