PubMed:32149769 / 1216-1222
Annnotations
LitCovid-PAS-Enju
{"project":"LitCovid-PAS-Enju","denotations":[{"id":"EnjuParser_T177","span":{"begin":0,"end":6},"obj":"NNS"}],"text":"yields"}
LitCovid-TimeML
{"project":"LitCovid-TimeML","denotations":[{"id":"tok229","span":{"begin":0,"end":6},"obj":"NNS"}],"text":"yields"}